Of course, the data Reddit is selling is user information.
This is a false narrative that people like to believe it. It is not user information, it is the company information.
It is that simple. Users created it, by choice. Nobody forced people onto Reddit and post for years on end. But people do.
As long as people play victim and claim these tech companies are unfair because they stole data that is on their network, those individuals are screwed.
Even today, with it known what they companies are doing, people flock to these application. Look at all the people "on Hive" who spend their days on Twitter and Reddit feeding those databases.