I asked this question on WordPress SE 3 years ago and it has recently been flagged as off-topic. I found this puzzling first of all due to the immense belatedness, but most of all for the fact that it is truly a question only relevant in the WordPress domain. Not to mention that I eventually figured out an answer and posted it, which is going to be invaluable to anyone stuck on the same issue in future.
I raised this concern and the response from moderator was along the lines of 30K+ plugins cannot be supported on WordPress SE. On the same page as I was looking at the question, other BuddyPress questions were listed in the right-hand sidebar showing that it is indeed an area of interest to a section of the WordPress world.
The comment by moderator that "we anyway dont have any BuddyPress experts on the site" is a bit short-sighted. Expertise in an area grows if sufficient interest is shown in that area by those asking questions. If all plugin-related questions are closed off then there shall be no expertise grown for plugin questions.
What I find odd about not encouraging plugin questions is that plugins are core to the functioning of WordPress. There's hardly any installation that runs without at least 5 plugins. I do agree that plugin questions do have their own support forums, but that doesn't mean that all plugin discussion should be muted in a forum that is concerned with issues facing WordPress users and enthusiasts.
WordPress itself also does have a support forum and they have found themselves unable to kill all plugin related discussion since as I mentioned before, it is hard to discuss a plugin without discussing WordPress. They are intertwined.
As I understand it, WordPress SE is QA for WordPress experts. Who better than those well versed in WordPress to tackle questions facing other users of the platform?