I’ve given a lot of thought to a system where you could only downvote by comment explaining your objection. The comment would be visibly a downvote comment and moderators could handle abuse of the system.
I stopped reading their reasoning after a few sentences. Let people have their opinion, good and bad and stop whining around trying to be “all is cool”.
Didn't read the dislike button, however the reason why I dislike dislike buttons/options is is squashed conversation, connection/engagement, and deepening understanding for all parties.