Rly? The game is still updated, just not as often as everyone would like. The forum is decently filled with drama and stuff posts, but you have that almost everywhere. Look at Reddit and Youtube for christ sake
Well no, it wouldn't.
If Badspot died, Rotondo would probably not continue developing a game that is not his. Rotondo is only moderator, so he can't make himself Administrator over the forums. Likely he would get bored moving topics and banning people, and either shut down the forums (I doubt he could), or leave it.
Blockland is an indie game, not a full development team where anyone can take another person's place.