Gotta agree with this assessment about the first three games, especially the third game, which had the most nuanced take.

The Twitter OP failed to account for the fact that Connor failed to save his people because they failed to save themselves, and they even FOUGHT him because he was trying to broker peace with the Europeans.

At the end of AC3 Connor was no longer with the Assassins because he rightly pointed out that they were idiots with a dumb code that didn't hold weight when measured against the realities of the world, and he ALMOST sided with the Templars after his talk with his father (who actually had one of the most sensible monologues in the series), but it looked like they ran out of time and rushed through those sequences toward the end.

But the general theme of AC3 was creed means nothing if what you're using it for is only self-serving and destructive, and it was one of the only times the series took a deep dive into each side, showing the intentions and motivations. Haytham actually was presented really well as a Templar with good intentions and motivations and goals aimed actually bettering society.