you are the one who brought up Cavazos lol
this sure seems and looks like pretty normal throwing mechanics to me for McCarthy
https://www.hudl.com/profile/10003194/JJ-McCarthy
in his entire ranking history McCarthy was a composite 5*. the only reason he ended up at IMG is because his school had their senior year cancelled due to COVID. if you think he was going to go there, as a composite 5* QB, and change his throwing motion as a senior and hope to keep his scholarship to Michigan, you really are as dumb as you pretend to be.
Mond had a weird throwing motion in every video/highlight i've ever seen of him based on 5 min of looking him up. his soph HUDL video shows it, videos from his last year at A&M show it, NFL preseason games show it.
if you think most schools, especially IMG, is going to tell a guy to change his throwing motion going into his senior year of HS you really are dumb. when he transferred to IMG as a senior, i believe he was a rivals 5* and #1 DT QB in the country for them. he finished as the #3 DT composite QB in the country. so of course he isn't going to change what's working.
again, nobody is going to go there with the hope of changing a guys throwing mechanics his senior year of college when he is trying to get a scholarship