I don't know what you mean by "slate", but I do understand "diss".
I also don't know which posts you've been reading, but I haven't personally noticed much dissing. Are you talking about when people criticize posts of lyrics and songs? I mean, when they point out details they think could be better? I've seen a lot of that, but it is almost always done respectfully and it seems most people point out their remarks are based on their opinions and understanding and invite the receiver of the crit to ignore if they don't agree.
My reason for posting my songs is for people to hunt diligently for weaknesses and to tell me about them and hopefully give me ideas for making improvements. I really, really like getting criticisms. Having people tell me it's a great song and they love it is nice, but doesn't help me improve.
But maybe you've noticed something else. You said "some peeps", so maybe it isn't wide spread? If that's the case, there are always some people who are more negative than positive. I just ignore it when it happens. That is, I ignore the negativity, but I still look to see if I can get any good out of the post.
I don't know if this helped you or not...if not, just ignore me.