Wilder is not a bum, but he's also not what you're making him out to be. Saying he's a master of timing, distance, creating openings, and pressuring guys is a stretch.
Mayweather could clown McGregor because Mayweather is an actual master of all the things you listed. Wilder isn't. He has capability in those areas, but not so much that you can assume he'd completely outclass another skilled fighter. It's not like Ngannou is a wrestler turned MMArtist. His base was boxing and that's what he wanted to do. Do I think he's got elite boxing skills? No. I do think he has enough ability, toughness, and power to make for an interesting fight with someone like Wilder. You make it seem like Wilder is just going to dance around Ngannou and pick him apart exposing his inferior footwork and head movement. That's not how Wilder fights and you know that.