What is wrong with Mahomes' deep ball?

[Bearcat]

I get the "he's never been good at the long ball" stuff for those 3rd and short bombs, but a few long passes today weren't "**** it Worthy down there somewhere" and throw it as far as humanly possible, they were relatively easy throws for what, like ~30-40 yards?

And yeah the line sucks, but this is the same quarterback who used to throw cross-body 40 yards across and downfield to guys on a dime or throw it 50 yards downfield on the run, and he's struggling with relatively simple throws with no one in his face or breathing down his neck.