I’d agree with @JammyDodger that you’re incorrectly conflating “Likes” with “Support for position.” It’s entirely possible to “like” a post because of its tone, well-expressed argument, or even that the poster chose to engage in a positive way; while still arguing strongly against the position expressed in the post. I believe that I’ve done so on this very site.
I’d encourage you to look at the poll options as well. A post such as oh wow I agree really shouldn’t exist in the first place, and a disagreement should include reasons, otherwise just vote in the poll. If a topic has degenerated into 10 different squabbling sub-threads, it’s probably hosting at least one or two separate topics to be split out.