There are certainly instances of this... there always will be. But by and large, I didn’t see it during my T-38 FAIP days. Most pilots that got cut in -38s were for single-ship things. We had one in my class and he ended up being an F-4 WSO. It’s been a long time but the ones I remember were mainly T-38 Contact washouts.
But it didn’t happen much: we lost 21 people in my UPT class and only the one guy was in the T-38.
I do recall one in another Flight that was washed out on his Nav check. I kid you not.
Late in the Formation phase, we got notified if we were going to the FAR or TTB track. That was where the syllabus split and the TTB track did more out-and back Nav events.
Overall, I liked “the old way” and if I were King, I’d send everyone to the T-38/T-7, dump the T-1, and dust off the old syllabus.
Certainly, there are ways to do it better than we did... but there is no doubt in my mind that the T-7 would be a great platform for all USAF UPT graduates.