The only problem is that hate-watch ratings count exactly the same as ratings from fans, which guarantees that A) the show won't change course, and B) more shows like it will get made in the future. Every minute spent watching is robbed from something that's actually good and could use your support. You have nearly infinite options now. But strangely enough, the phenomenon of hate-watching seems to have appeared because we have options.
I don't remember people doing this shit years ago. No one bought a CD for a band they despised, you didn't read books by authors you mail jars of piss to, and you never ate pies made with fruits you hated (looking at you, pear). And when you watched a show you didn't like, it was because you had one TV in the house, it had ten channels, and your dad wanted to watch M*A*S*H and not DuckTales. But that was literally 70 years ago, and you had to hand-crank the TV to make it work in the first place. Look it up.
I didn't hate-watch 118 seasons of Walking Dead because I was still enjoying it or because I was sure it would get better (though I did hold out hope for a while). I did it because I used to enjoy it, and now I didn't, and that upset me. I watched to prove myself right. "Look at this fucking shitshow. Look how it doesn't live up to my standards." You start obsessively counting all of the ways the show failed you, congratulating yourself for being smart enough to deconstruct it.
At that point, your hate-watching validates your hate, lets you feel that fire in your gut that says you have been let down. That Carl should have goddamn died in Season 3, that Elena shouldn't be with either brother on Vampire Diaries, and that Dr. Phil always gives advice on par with what you could expect if your dog's butthole grew vocal chords.