Endgame or not, most players won’t battle the bosses if it’s not enjoyable or impossible with even near-endgame creatures. It’s just like the PvP arena.
This game won’t survive if it’s not somewhat inclusive, you can’t always cater to the top players.
I’m not arguing with the difficulty, but the fact that Ludia sets level and boost limits says they’re trying to include as many players as possible. If they wanted this feature only for the elite, the campaign mission requirement would be much higher.
The way I see it, Ludia’s just now getting the data it needs to adjust the raids in the next soft update. They do it with every patch like when Smilonemys’ attack damage was too high when it was released but changed that same week.
It’s a guessing game to change things pre-release with a limited number of players to test them only to find out it still needs tweaking after a truly large scale test.