Animal crossing likely won't create a lot of clones, as even with how MASSIVELY stripped down your furniture options are in new horizons it still means creating a SHITLOAD of assets.
The reason Battle Royal got so big is that it's easy to slap down a couple generic buildings on an elevation noise mapped plane, put in One (1) FPS gamemode and call it a day, Bazinga, you're done GOTY ALL YEARS.
Considering the particular genre spawned from a minecraft meme gametype for servers, it's really not surprising how low effort a Battle Royale game is.