In the NFL, legit QB's (which he is not) make the receivers. A legit QB will overcome mediocre receivers and make the offense better. If the QB has to be propped up with skill players, he ain't it.
"Pretty pedestrian" is being kind. The guy is a bum. Only good thing I can say about the guy is that his completion % has gone up each year but that correlates to his attempts going down every year except for last year. And completion % in and of itself doesn't speak to accuracy. I've seen it with another Jones - Mac, who is also a bum. He completes easy, risk-free passes and media members and idiot fans lose their minds talmbout how accurate he is.
And I don't want the Patriots paying this Jones like Daniel.
To your point about his numbers being good in 1985: profootball-reference, like basketball-reference, has "adjusted passing" to see how these guys compare to their peers in their era. 100 is league average.
His yards per attempt are well below the average every year. His completion percentage has been below the average every year except for last year when he was 12% (not 12 percentage points) above league average. His touchdown percentage has been above league average once - in his rookie year.
His pick percentage has improved every year relative to league average to the point where it led the league last year. He gets sacked out above league average rates. He's only had a passer rating above league average once, which, again, came last year.
But because he looks the part with the color, height, arm strength and running ability for today's game, "Danny Dimes," the well below average guy, gets paid and is allotted numerous chances to succeed.