@Maxcaufield
I would counter your argument by asking what has the Maker and Andraste ever done to be worshiped so devotedly by the majority of Thedas? The Maker has never even performed so much as a miracle, and is said to have turned his back on his creation not once, but twice, and didn't even save his so-called bride from being burned to death. What power did Andraste demonstrate that raised her to divine status other than wage a war, albeit successfully until it ended in failure? Heck, if either of the Maker was so omniscient or Andraste such a prophet, why didn't either of them see Maferath's betrayal coming? When compared to those two, I think Solas, and by extension the Evanuris, were far more godlike than the Maker and Andraste.
I don't know what your critique is when it comes to what counts as "worthy" of godhood. What I do know is that a majority of people are convinced by deeds and actions, and the beliefs that are associated with them. People want and need actions to validate their beliefs, to convince them that their faith is correct. Hence the likely reason behind all the terrible things the Chantry has ever done to exert its authority in the Maker's name, to compensate for their absent gods lack of power. We saw the same thing with the Inquisitor being called the Herald of Andraste. People were desperate for any kind of sign to give them hope, and to validate their faith in a time of great doubt and uncertainty, and they found that validation in the Inquisitor's survival at the Conclave, supposedly by the hand of Andraste herself. The Inquisitor can deny it until their blue in the face, but people still believe it, and therefore raise him/her to the status of holiness.
The Venatori wanted the same thing when it came to Corypheus, but theirs was more about greed and ego and a need for dominance, and they found the embodiment of the Ancient Imperium's power and greatness in the Elder One. They worshiped power of Ancient Tevinter, and made Corypheus their god because he represented and demonstrated that power.
And now, here come Solas, who not only validates that the lore and beliefs of the elves, that both the Chantry and the Imperium have for centuries said was false, but he practically shows up like the answer to elven prayers. The Chantry only ever had the words of a dead barbarian woman who failed as all the proof they needed for their god. Now the elves actually have one of their ancient gods fighting for them, with power no one has ever seen. When compared to each other, which one if more worthy of the mantle of godhood?
As to Solas' power, I still stand by my earlier statement, but I will add further to them. Solas needed the Orb in order to unlock his dormant power, which he did end up getting back by taking it from Flemeth. Now he can also turn into a giant six-eyed, winged wolf the size of a High Dragon and can command legions of Spirits of Valor. As far as I'm aware, no other mage has ever been able to do something like that. And now, thanks to his unlocked power, Solas can go in and out of the Fade as much as he likes. Almost all of Thedas sees such a feat as a dangerous implausibility, but to him, it's pretty mundane.
I'll grant you that the Tevinter mages who turned that woman and those brothers into talking statues were no doubt very powerful, and even the mages we play as can turn people into stone, but with the talking statues, I doubt they were small feats, and with our MCs, it was definitely one of the longer to recharge spells. Solas was able to pull off petrifying whole squadrons of people without blinking or even looking at them. And despite the ease with which Solas uses that spell, Dorian says that he could still feel the intensity of the magic that was used.
There's not a doubt in my mind that modern Thedas' standards for gods are somewhat low, especially when you consider that the primary deity has never done a thing, so when some other very powerful yahoo comes along with great power nobody has ever seen, they give out the title of god like it's a cheap prize. As Leliana once said, people are sheep. That's why when I think of the power that Evanuris wielded in a time where magic was far more present in the world and everyone was a mage, I think the only way to describe such beings is godlike.
And as to what you said about the use of templars against Solas, I still maintain that that tactic wouldn't amount to more than giving Solas some new lawn ornaments. One example of the fallibility of templars against mages would be every templar sorry enough to go after Flemeth and died in agonizing terror. The best example I've got is the Mage-Templar war. If the templars' power was so great against mages, there wouldn't have been a war in the first place; they should have just easily crushed the mages in every encounter but the war was instead fought to a standstill. Even before the war, when it officially started in the White Spire, the very heart of the Templars' power, they couldn't even kill all the mages that were gathered there, and instead got their butts kicked.