again, every single person that owns a PS5 owns that controller, and every single person can turn all of these features off for every single game.
next time you wanna call someone dense you might wanna look in the mirror. there is no logical reason for the DualShock 4 not to work with every PS5 game.
and this is before we even begin talking about the 3rd party controllers that will most likely soon come to the market as well. there are PS4 controllers that don't have Sixaxis and controllers that don't have a touch pad, yet these controllers are compatible with PS4 games and the PS4 itself without issue. this will eventually happen on PS5 as well, there will be 3rd party controllers without haptics and without touchpads or Sixaxis. these will work with PS5 games, people can buy these and use them instead of Dualsense controllers.
so the only argument you have left then boils down to "you can't use the Dualshock 4 because it's not a 3rd party controller for PS5" and that's not a valid reason. Especially since they could give developers the option to support DS4 controllers, like they gave PS3 developers the option to support generic direct-input PC controllers... which is why the DualShock 4 and DualSense controllers work on many PS3 games btw. (not all of them, since like I said this was left to the developers to support or not)