Sites like Reddit serve a very limited number of requests of all people's requests. And a very limited type of requests.
Plus the Reddit site itself does not generate any income for those who post there. You should only use sites like Reddit to shift attention to your own sites.
P.S>
And judging by your posts above, you consider the wrong people as SEO experts

You name examples of some marketers who understand nothing about SEO, SEO experts communicate in closed / semi-closed communities, and do not lead any video channels and podcasts
You won't learn anything useful about SEO from those marketers.