I've actually met both TRP and FDS obsessed people in real life. I don't believe for a second that the majority of these people live meaningful/happy lives. I strongly believe that if you live your life based on values of antagonizing the opposite sex (nearly 50% of the population), you will never be happy. Here's my experience:

TRP guy: We will call him Josef. Josef was a guy who was chubby and unsuccessful with girls during highschool. Through conversation, I realized that he spends a lot of time reading TRP. In his case, I will give him some credit because he actually does a lot when it comes to self improvement. He's in a better place physically speaking (weight, hygiene, etc), at least better than his highschool self. But his rejection and past experiences with women (alongside certain toxic redpill beliefs) have swayed him from any chance of dating girls. He's become too bitter. Anytime he gets rejected, he strongly believes it's because she'd rather date a chad.

His current mental state is in decay. Before, he'd blame women for his lack of romantic success. But nowadays he's transitioned to blaming himself. I guess it's good that he's no longer hating women, but he now hates himself for not being good enough for women. I think it's great that he's erased a portion of his misogynistic-self, but in turn he's directed that hatred to himself.

FDS girl: We will call her Sabrina. She's my co-worker. I found out she was FDS because I accidentally got a peek of her computer screen reading FDS posts. After that, everything suddenly clicked in. I realized "oh, so that's why she's so mean to the men in our workplace." The funny thing is, most of the men at our workplace leave her alone or are very respectful towards her. But you can tell by conversation that she has a vendetta against men, even the ones that are good to her. Even during training sessions, her un-professionalism shows. Being dismissive and rude to new male workers, but showing patience/understanding to new females.

The crazy thing is, a lot of the women at the workplace don't like her either. She has the personality of the highschool gossip queen even years after graduating University.

Both people seem miserable and alone because their toxic behavior pushes people away.