I agree … but they were better than the QB's in the 2019 class.
Baker Mayfield is one of the best at quickly taking in information visually, processing it, deciding what to do, and translating that to action, quickly releasing the ball, and putting the ball where it needs to be. He was better than most of the NFL at that while he was in college … truly phenomenal at read-and-react natural ability … which coupled with his confidence, leadership, and accuracy, are the reasons he was able to instantly succeed.
Russell Wilson was a very poised and polished QB at NC State when he was pushed out for the taller kid that became an NFL journeyman. So Wilson went to Wisconsin, learned another team, and again picked right up being an excellent QB, proving he could learn, adapt, and execute at a high level. He was experienced and proven. He was just undervalued because he was short. People thought he couldn't see over the OL, and they were right, but he made a living out of seeing between them or sprinting out where his view was clear and buying time for a so-so OL. None of the guys in this draft possess the QB ability that Wilson had, each of them comes with some serious deficiencies. Wilson's only one was height, which proved not a big deal.
Dak Prescott came into a perfect situation. He had a dominant OL, dominant running game, and even the Dallas Defense got better. But after that first initial season, he hasn't been as good, because the ideal environment dropped back to simply good, and he isn't as good of a QB as those other two, IMHO.
Not every year has great QB prospects … when they don't, the media hypes up guys like Jake Locker, Blain Gabbert, Christian Ponder, and Andy Dalton. When the experts were saying the only good QB was going to be Cam Newton, and Cam went #1 overall … the media and QB-needy teams pushed up these other guys who just weren't special prospects.