Yes but usually when people make suggestions they want positive responses not a ton of disagrees. Most people would just click the disagree button instead of answering to the thread. That means people have few ways to improve their suggestion since they dont get any feedback except a post that most people seem to disagree with for reasons you dont know. I am talking from experience... dont ask me where I got it I wont tell you.How can you be upset? It's atleast better than saying "BAD SUGGESTION [INSERT COPIED REASON HERE] -1".
And how can this turn the community more toxic in any way? It's only for the suggestions forum, I'm pretty sure there are enough suggestions that you don't agree with.
So saying I disagree with someone will turn them more toxic? Cool.
Besides this :