Not competing against any P5 at any time as you claim it is about the should've wins against g5s. UMass, Toledo, USU, ECU, NIU, and Fresno State. Those were all games BYU shouldve won.
Of course BYU fans are going to look like spoiled whiners if you make up imaginary goalposts that are unrealistic, but when you look at the vast majority of complaints they aren't unrealistic.
Many people complain about lack of funding and dedication from above to the program as well. You pointing that out isn't a new idea, it is a common complaint. Many recognize it is an issue and acting like it is being ignored shows your ignorance.