huge amount of forks but they all miss the point the main game had in the first place
Why it's bad? I really like diversity of *bands. You can play FA Angband, NPP Angband, UnAngband, and experience different gameplay style every time, and I find it amazing. Although I don't think it's something that will happen to NetHack, its community seems much more, say, conservative.
Btw, using installer that won't let you specify, and even don't show *where* the game will be installed, is kinda red flag for me.