Dpoll does stake weighted voting, iirc.

The proper response to someone being downvoted is to upvote them, imo.
If that is what suits you.
Yes, it sucks when someone much bigger than you wipes you out, but no that doesn't forfeit their right to speak their opinion.
Some people use words, others use downvotes.
Freedom isn't always the prettiest solution, but it is generally the best.