Toot:
I prefer to have a choice and be prepared, when it comes to these things so discussion topics and the comments sections are far more reliable in my experience.
Once Tags are applied, I consider the drama or movie to have more scenes or an abundance of references in dialogue, etc. that have been applied. You're right, Comments and discussion are valuable in discerning what a drama is offering.
At least MDL has an Edit even though it requires multiple sources of confirmation to pass the Edit team, and then I think it's a bias of whomever has taken on a specific drama Edit. I've requested edits and was turned down after sighting multiple sourses.
In the end, it's left to individual viewers to decide, regardless of the Tags, whether they'll watch are not. MDL offers Tags whereas the streaming sites do not. That's another reason I use MDL, although MDL isn't by any means a perfect site; the same as other sites, but it IS offered and it's enjoyable.