This was in my high school and early college years, later on in life I was able develop romantic relationships with them and healthy platonic relationships. I’ll be upfront and say a lot of the times if a straight dude hates women vehemently, it’s probably because he’s not getting laid or able to form any semblance of a romance with a woman.
The good news is that -- like with any specialized school of self-help thought -- the less-desirable dating advice canon has a bunch of "common sense" stuff that you can separate from the shittier elements without extreme effort.