I'm fine if they add dps checks in normal content but it has to make sense from a narrative perspective and not just a game mechanics perspective. Like if we are having a Rockman Zero 4 scenario where we are atop of a falling meteorite or space station and there is limited time to blow the thing up before it destroys the planet or something, that is where a dps check makes sense. If it is a boss just deciding to finally use his doomsday laser cannon that he magically had in his backpack the entire time to one shot us at the 10 minute mark, that is a bit immersion breaking.

Also, they do have some DPS checks in the game already in normal content, but people don't really notice them. Just about all the Ultima weapon fights have one that is insanely low: I think people have to be literally not pressing any buttons in order to get blown up by them, or the raid has to be mostly dead.