> And the reason there's so many successful plugins for minecraft is _because_ it's in an "easy" language like java.

Minecraft got mod support way after there was already a ton of mods for it. The way it got initially was basically hacking into game jars, not because it was supported in any way, it only got support later.

Granted, Java JVM did made that easier, but still the reason it got so much stuff is because it was so fucking popular first. All of the modding tools were pretty much made by community from scratch, way before Mojang moved their ass.