The multi-platform titles tend to be either lazy ports for games that came out upwards of close to decade ago (Skyrim) -OR- games that can still be run reasonably on the hardware (which pretty much rules out most AAA games). Of the exclusives they have, none are system sellers or end up on the steaming pile of shovelware penny games.
They are not the "hot new thing" since there is lead time on game development and if you want to be on that current wave, you're already knee-deep in PS5/Scarlet dev kits.
You sound like a hater, honestly. There are plenty of very current multiplats ont he system. As for no system-sellilng exclusives? I mean come on now, that's just false. It's literally the fastest selling system...period. To say games like Smash Bros., Mario Odyssey, Pokemon, etc. aren't system sellers? You sound super delusional.
As for PS5/Scarlet they still have a lot to prove, and will have to catch up quite a ways to the massive number of units the Switch has sold. Right now it has dominated, and it looks like that's set to continue.