According to my personal experience, PUA does work.

Women respond to my attitude and techniques very differently. That's a proven fact. You will know what I mean the moment you try it.

In terms of picking up women, the red pill is worse than PUA. My results are worse after I implement the red pill mindset. Practice is everything and the golden standard. If it doesn't work, it's not true. Although I have deeply believed in the red pill and The Rational Male, I abandoned it quite quickly and find out its flaws. Basically the articles of Mark Manson say a lot about it.

I am average looking (though not ugly) and not tall or not spectacular in any obvious way. I can promise you that it works, while it really takes lots of practice, reflection and work on your internal game. The last one is the most important.