Yes, actually you are. Thornton's detractors are pointing to his size and you're replying Thornton doesn't need to be the size of Metcalf to get open... the players you name as similarly not needing Metcalf's size are Moss, Jackson, and Patten. Moss was taller and much heavier than Thornton, so there's that flaw in your comparison, and Moss also happens to be one of the greatest WR in the history of the game. DeSean Jackson is much shorter than Thornton and only weighs 7 pounds less. Jackson also happens to be one the most explosive downfield targets in the history of the game. Patten as I already pointed out was shorter and more compact so you've failed to make even one legitimate size comparison with Thornton. And I don't know if Thornton can duplicate Patten's numbers but if he can average 18 Y/R with 7 or so TDs (Patten's ceiling) then I'll consider it a win.
I at least have a clue that I would never mention Metcalf, Moss or Jackson in any sort of comparison with Thornton. Likewise Mac isn't going to be Brady, Allen, or Burrow. At this point I'll take Carr-like production and hope my team is good enough otherwise to be competitive with the better teams in the league.
And we do have a clue what Mac and Thornton can become, we've seen them play, so we can project future returns. I could end up being wildly wrong about Thornton but I'm skeptical he'll amount to much. It's hard to come up with a physical comp for Thornton but Robbie Anderson comes to mind and he was an UDFA out of Temple. Anderson averages 13 Y/R and 45 Y/G with a 55.8 catch%... those would represent significant improvements for Thornton and I would set his ceiling for 2023 on those numbers.
I'll get back to you with projections for Mac... at this point I'm waiting to see what happens with the WR corps.
Waddle, again, not a good physical comp for Thornton. He's 5 inches shorter and the same weight. He's also a 6th overall pick with massive potential who had an excellent rookie season followed by an even better one. Same with DeVonta Smith, 10th overall pick, could have been a pro bowler in year two. You bring up these names, and it raises the bar for Thornton, unfairly, because he's not going to be anywhere close to these guys.