No, I'm more inclined to think 2017 was a complete fluke in a great system. There were problems all around him his rookie year fundamental-wise, and people just forgot about them in 2017. They're still there, and they're causing him major problems now.
People aren't not noticing, he just hadn't played all that well until the Thursday Night football game. He'd had a few good games, but nothing that noteworthy. It's possible that a player can not play that well and his team can still win, and a QB's success isn't the sole indicator of a team's...
I don't think he's a problem, I just think he's overrated and average. And his play all season long has proven me right.
The Eagles clearly have much bigger problems.