Yep I hear across the middle is the way to go in theory. In practice I see the fade used more than the post successfully. I think it boils down to ensuring enough protection for the long route pre-snap.. which is what I found most egregious from the offense.
Regardless the most important part is throwing an accurate ball over the defender which I don't have a ton of confidence in so maybe the point is moot. Same story with having a more athletic WR making plays at the other end. If I'm a DC I'd play a looot of cover 0 against this offense. And Beli is gonna do that.