With great time, and care. Discord managed to do this in only 4 years, so it is possible. The cynical side of me says that a distributed social network, by definition, doesn't have the ability to run large marketing campaigns like Discord.
Something like that, although I don't delude myself into thinking that's coming in the near future unless perhaps Apple makes it part of its new privacy-centric campaign. Even then I'm not sure Apple would do better with respect to free speech and moderation.