I agree with what OP says and the general ideas of this forum, but sometimes I can't help but notice that fellow members come across as needlessly condescending, which provokes said subjectivists. I mean, as OP says in his post, they have known nothing all their lives except their audio myths. I don't think they'll be too receptive of posts which seem to insinuate (whether intended or not) that they are idiots who should go get educated.
I think a little bit of patience and kindness could go a long way. I mean, as an example, think of it as trying win over someone to your (possibly controversial) beliefs, be it religion or politics etc. Would you do it by mocking or belittling the other party's beliefs on the relevant matter? No, you would patiently as possible explain why your belief makes sense, and ask them to reflect on theirs. In the many recent forum posts where I have seen hardcore subjectivists get into arguments with members, I feel that it could have gone differently if the initial exchanges were a little less blunt and/or provocative.
Of course not everyone here posts in a condescending or rude manner, but there are definitely enough that I have noticed and feel like it might need to be addressed. Feel free to share your thoughts on this.