We wanted to try BBPress but we discovered quickly that it caused way too many problems with roles & permissions for the site. So we removed it. But it turns out that for at least 8 years bbPress has known the roles can’t be removed cleanly and they just shrug and say “not important.” So, I recommend you NOT INSTALL THIS PLUGIN. It will leave ugly traces behind itself like a nasty WordPress slug and you’ll waste hours googling it and trying to fix it to no avail. It’s old, it’s ugly, and it’s a mess.