Man....I read that thread last night and my head nearly exploded. I was just too tired to rip it apart, but I think you nailed it.
Let's just focus on the disparity between what the Gaytors BELIEVE and the actual reality of Dan Mullet as the QB Whisperer...
Tim Teblow. Arguably the largest peg on which Gaytors try to hang the "Mullet has developed loads of QBs" claim. But let's review...Teblow was a top recruit, he was never "underrated". He was a run-first QB who was so beloved in North Florida that he was already starting to displace a QB who, you know, ACTUALLY WON A NATIONAL CHAMPIONSHIP. And then, after "years of development" under Mullet, Teblow was so bad at, you know, ACTUALLY THROWING THE BALL, that he had to get a special QB coach to improve his mechanics prior to the NFL draft.
Who else? Franks, the "Heisman finalist lock" who was actually so bad that Gaytor fans were happy to see him go because Trash had 8 or 9 good games? And Trash will probably be beaten out by a "should-be-a-Power-Five-starter-right-now" Emory Jones? Anyone see a trend here? For the Gaytors, the "better QB" is always the next guy, the next guy, the next guy. And Del Rio has now earned his Gaytor Heisman-winner QB statue by having a couple of good days at Elite 11.
So let's look at all this massive Mullet development (all ratings from Rivals):
Utah - Alex Smith - 2 star (it was Utah in the pre-Pac-12 days)
UF - Chris Leak - 4 star (not recruited by Mullet)
UF - Josh Portis - 4 star
UF - Tim Teblow - 5 star
UF - Cam Newton - 5 star
UF - John Brantley - 4 star
MSU - Tyler Russell - 4 star
MSU - Dylan Favre - 2 star (FAVRE! Only offered a scholarship after JuCo Cam Newton picked Auburn over his old OC)
MSU - Dak Prescott - 3 star
MSU - Nick Schuessler - 2 star (3 star on 247, left MSU after 1 month to walk on at Clemson)
MSU - Cord Sandberg - 4 star (drafted by MLB, later signed to play QB at Auburn)
MSU - Elijah Staley - 3 star (half-brother of Patrick Ewing Jr.)
MSU - Nick Fitzgerald - 2 star (3 star on 247 and ESPN)
MSU - Nick Tiano - 3 star (left MSU after 1 year)
MSU - Keytaon Thompson - 4 star (now in the Portal)
UF - Feleipe Franks - 4 star (not recruited by Mullet, though he is a Heisman finalist lock)
UF - Kyle Trash - 2 star (not recruited by Mullet, but better than Franks, another Heisman finalist lock)
UF - Emory Jones - 4 star (better than Trash who is better than Franks, another Heisman finalist lock)
UF - Jalon Jones - 3 star (lasted 1 semester before sexual assault charges)
UF - Anthony Richardson - 4 star
vs. Mullet NFL draft picks:
---Josh Harris (6th round, Bowling Green) - didn't recruit him, worked with him for 2 years (not including Harris' final year at BG)
---Omar Jacobs (5th round, Bowling Green) - recruited him, didn't ever work with him, Mullet coached 2001-02, Jacobs played 2003-05
---Alex Smith (1st round, Utah) - didn't recruit him, worked with him for final 2 years at Utah
---Tim Teblow (1st round, Florida)
---Dak Prescott (4th round, Mississippi State)
That's it. A total of FIVE quarterbacks drafted into the NFL, two of whom he didn't recruit, and one of whom he never worked with (but recruited). Although I guess Gaytors will try to give Mullet credit for Cam Newton, even though he picked Auburn over his old OC when he transferred back into the SEC.
I mean, let's just start with the obvious. In all of his time at UF, there is no pattern or history of UF quarterbacks being "underrated". And in all of that time, thus far, Teblow is the only one drafted (Cam too, if you want to give Mullet credit for that, and Gaytor fans do). In all those years at MSU, he's only got Dak to show for it.
So for TWENTY YEARS of QB coach, OC, or Head Coach, he's got FIVE draft choices (two he didn't recruit and one he never worked with), and in those twenty years, he has NEVER suffered from Rivals/247 "underrating" his QB choices.
But, yeah, the recruiting services are "biased" against UF and/or Mullet.