Yeah true

Nope. Josuke got a fever too, and they didn't know he existed. So Josuke would die, part 4 wouldn't happen, and Dio would probably try to kill them anyway.

Wait, josuke can eat the roka and jotaro is strong enough to defeat dio

If Josuke eats it part 4 doesn't happen because he doesn't have a stand and part 3 is basically the same as usual

ok, makes sense, but jusuke could've gotten hit by an arrow

He doesn't seem like the kinda person Keicho would shoot, and if Josuke wasn't looking for Kira then Kira's dad wouldn't show himself

maybe araki could've planned it so that josuke got shot before the events of part 4 out of nowhere

We'll never know

then he would've never met polnareff, part 5 wont exist and stuff

time stop, ora, pull hentai tentacle squid out, friend. ez