There is nothing wrong earning money from forum whether it's from signature campaigns, selling goods or offer services. Good posters can earn money from their signatures. Some people only do bounties, that's not wrong either. Everybody have their own use style of forum. You don't necessarily join conversations about Bitcoin, there are a lot of different parts of forum.
Most newbies are not new users here anyway. Usually it's a new account from an old user or invited by an old user. There's only a few people who join the forum in 2023 by hearing it or crypto-currencies new.