It's no worries.
I've been a member of/moderated forums with upvote systems before, both with and without the ability to downvote. They don't necessarily overtly reinforce any kind of positive behavior (although I don't believe they exacerbate bad behavior either).
Rather, they are a reflection of a given community's overall atmosphere. The posters and sentiments that are popular without likes will be the same posters and sentiments that get all the likes. The posters who currently post to gain clout will continue clout-chasing. Those who feel left out or unheard will, unfortunately, continue feeling so.
I don't think the system is inherently a bad thing in the grand scheme of things. I just am wary on whether or not it would help members with social anxiety, because I've seen with- and had to deal with- the opposite happening.