RSD has a lot of different personalities besides Tyler. Jeffy is actually one of the first guys who "blew up" because of his off the wall antics and beastmode. He often regrets putting those concepts out there because newbies can misinterpret them as hitting on every girl in the club like an e-tard.
They put out great free content. Not associated in any way with these guys except that their products and free seminars have helped me tremendously.
I myself did 30 day challenges where I would go out 5 to 7 nights a week. I journaled my progress and actions from day to day. Set out daily goals, etc. I made it like a workout regiment. I wasn't hitting the clubs hard every night, but I'd run day game, go to karaoke bars and talk to the few cute chicks there, and usually go hard friday and saturday and one week day. I did those sober, so I was never hungover. I got my workouts done in the morning, and did well in school (I had close to a 4.0 GPA that semester) and still had time to chill and hang out with my buddies and family.
My game improved drastically through those challenges and sort of tapered down a bit, but the eventual settling point of my game was higher than 30 days prior.
That was 5 or so years ago. Now I just go out on the weekends and it's cake. If I pull, I pull. If I don't it's not really a huge deal. I also do a lot of day game. I do approach a lot less than I did 5 years ago and my close rate is higher. But that's because I put in the work and it doesn't even feel like work because it's fun. It's SUPPOSED to be fun to talk to girls into bed, not feel like to chore.
The principles that RSD espouses are not spam spam spam. It goes deeper than that. They go into many of the same concepts and lessons that Roosh does. There are so many instructors and personalities to choose from, almost any guy can identify with parts of each of them and learn something from them all. You can see these guys in field in youtube.
Anyway, I enjoy both RSD and Roosh's works, but for different reasons. I don't think either one is having a negative effect on the dating scene at all. When I go to bars and clubs, I still see the vast majority of guys not have the balls to even approach. The dating market will never be saturated with PUA types because most men don't have it in them to go up to a girl they find interesting and attractive and just say "hi".
Another good video where he addresses and rants on guys who think these fun concepts they come up with are magic pills.