You missed one important point. Bitcointalk offers us the resources to be able to make money. Social media just consumes time which could have been used to earn money.
Tell that to all those YouTubers/Tiktokers/Instgramers/crypto Twitter influencers etc who are making shit load of money via social media. The only difference is that entry barrier to actually do it is much lower on bitcointalk so even a shitposter can make something.