Okay this is actually way over the top. A mod creator should literally never do this.

Playing on Minecraft 1.8.8, the mod was developed up to 1.19.3

@sushimcpe what’s wrong with the old version?

like is there a reason a mod creator would put that in?

@erase I don't believe so
If they don't support the old versions of a mod they can just state it. That popup also appears at different times, sometimes when I exit a world. It's a really bad move by the creator.