Are you being intentionally obtuse? Or were you born a moron?
For the actual mission they couldn't use F35s for the reasons given:
A) a plot device which was plausible as stated by an actual Top Gun Instructor,
B) The F35 is single seater. How would they film it? Have Miles Teller fly an F35? Or just CGI it which they didn't want to do at all?
Here ya go, maybe this will help. This is Dave Burke - Top Gun Instructor, he's flown the F16, F18, F22, F35. Possibly the only person to have done so (he isn't aware of anyone else who has though of course there could be others).