This is a common refrain around here, but I'm not sure it's reality. Remember the stat last night that the BB Patriots are 23-0 at home against quarterbacks under age 25? (Now 24-0. ) I have a feeling that we might be falling prey to a trick of memory--the handful of times a young nobody lights up the Patriots stick in our minds, while the many, many times they get overwhelmed fade into the mist because they're typical and not noteworthy.
Regardless, I'm rating Mahomes based on my own eyes, in multiple games. I think he's going to be really good. If you've rated him as "crappy," then we simply disagree and time will tell.