I think that sometimes we shouldn't wait for real damage and accidents to take measurements but we can prevent them from happening. Maybe ban is exaggerated but it will be optimal if DT members leave a negative or neutral feedback. I don't leave a feedback because it won't be visible, it will only be in untrusted feedback.
If you're think a warning message is important, don't wait for other people to do it for you, just leave an appropriate feedback even though you're not DT, I also not a DT member but I'm taking a move by leaving a neutral tag on his account. It's true non DT members feedback will be in untrusted feedback, but it's not a matter as long as you're doing right.
@FmaTR try to compile your post in one reply, the forum has a rule about prohibit posts in a row.