The Bucs' defense does deserve a lot of credit for what it did, but I think you(and the announcers) are ultimately right: the game plan was apparently "keep picking on the fifth-string linemen, and take advantage of Mahomes' turf toe." Can't knock it, it worked. What I can knock is some of those calls; the early ones especially felt rinky-dink.
It was the Brady-bonus that we all are probably used to by now.
No argument here. My dad groused that some of those flags were clearly based on the assumption that Brady can't possibly miss a throw without some sort of foul, ergo flags everywhere.