The bugs, as annoying as they are, aren't gamebreaking and the quality of the content BoN provides calls for a bit of leeway in my opinion. The only truly halting bug is the error with Maria's quest that I've seen people talking about for the past couple dozens pages. But even this is circumvented by using a previous 0.9 version (specifically the free demo version available on his patreon) of the game which was one of the most stable builds. So I guess it's less 'halting' since it doesn't prevent you from completing anything, it just is an annoying detour one must take if you wanna move on. Kinda like switching your controller to the second controller slot to get through a boss battle.
One of the things I praise BoN for is his regularity and the constant stream of content. Some have abandoned this game because of the bugs, but honestly I've seen much worse and they really don't bother me that much. The bugs can be dealt with if you have a bit of patience. This isn't a complete product, so expecting a complete absence of errors is a little much. Even that stupid 'width error' which has been around since the game's inception can be worked around with minimal effort.
Like Kixen said, at some point BoN will go back and fix all this stuff and there are plenty who have happily notified and listed the bugs in this game so BoN can squash 'em when the time comes. This game is head and shoulders above other adult 3D games so unless this game becomes unplayable due to an error, I'll keep coming back to enjoy it. Especially if BoN keeps churning of fantastic monthly updates.
At the very least, I'll stick around until Shasha, Laura and Amy get their questlines updated.