No it wouldn't be. And these would be 20-22 year olds not even close to their prime. This is a guy that might already be past his.
Ok, let's look at the Mets' college draftees from the first 20 rounds of the 2016 draft:
Peter Alonso (2nd round) - .728 OPS in A+ in 2017
Blake Tiberi (3rd round) - .540 OPS in A
Michael Paez (4th round) - .868 OPS in A/A+
Colby Woodmansee (5th round) - injured most of this year, .571 OPS since being drafted
Gene Cone (10th round) - .657 OPS in A
Dan Rizzie (13th round) - .473 OPS in A/A+
Jacob Zanon (15th round) - injured most of this year, .655 OPS since being drafted
Jay Jabs (17th round) - .694 OPS in A
Tebow is matching or out-performing all but one of these 8 guys. And this includes guys taken in the 2nd-3rd round. And yeah, of course he's 7 years older ... but these guys have just played 4 years of college baseball as opposed to taking a decade away from the sport. And yes, all but the one guy will probably be busts, but the point is that where he's at isn't bad at all for a first-year pro.
Again, he's not embarrassing himself. He's playing at a level that would be perfectly acceptable from most mid-round picks playing their first year in pro baseball and might be able to play in AA on merit. Which is damned impressive.