I know some guys who are into it. But, it seems that most guys are, or want to be "relationship guys". They want to lock it down because they have been socially conditioned to do that.
Nowadays it seems that fewer guys are going to bars to practice, and are more reliant on online game. I think they find that it's easier to just send a message than to walk up to a girl who might reject them face to face.
I think it is very natural to want relationships, if you are social, that need for long term companionship is just built in. It happened to me. I swore I would never get married. I am new to this forum but I first took the 'red pill' back in 2007. So that has been 13 years I have known about PUA. I became inactive on forums, etc since 2013. Nobody really wants to be seen as just a label.
I suppose I was a PUA as long as I was active on the forums. I had no problem calling myself that online, but I would not go around advertising to other guys that I was a 'PUA'. I would just tell guys that there are resources online to learn about women, and that I learned a lot from it. I usually would avoid saying 'Dude I'm a PUA'. I think very few guys outside in the world take it seriously. Many probably heard about it but don't fully understand the whole 'red pill' thing.
So after gaining a lot from the PUA community, I just considered myself as a guy who has learned a lot, and sort of 'escaped the matrix'. However taking the red pill did not stop the tendency to get into an LTR. I am currently married to a woman I met in 2013 and since left the forums to just live life and focus on that. Learn from my own personal experience bad or good instead of a community.
What I can tell you right now, is what I learned from the PUA community and 'red pill' was spot on. I am not sure if I will stay married, and hence why I came back. Looks like a lot of the OG's are here which is nice. Long term relationship and marriage are definitely not happily ever after, and it is good to know that forums like this are still here when reality hits you in the face. Still, I would not tell any guys to actively avoid relationships and marriage. I'd say go for it, but learn from it and remember that this community exists, and that the matrix is real.