I think it's fine to express relatively uninformed/layman/"gut feeling" opinions, but I also believe these posts need to be presented as such so it doesn't give

I think it's fine to express relatively uninformed/layman/"gut feeling" opinions, but I also believe these posts need to be presented as such so it doesn't give readers the impression that the writer is imbuing them with undue confidence/credibility. I've learned a good deal through such posts, but that's only possible if the writer isn't presenting opinion as fact and is open to new information.