Hate watching is still also watching. Why would I waste my valuable time and emotional energy on something I hate? Why would I reward the people who made it with money and success? Because in the only metric that matters to a company (number go up) a hate watch is worth exactly as much as a love watch.
Don't get me wrong, there are absolutely things I hate that are worth paying attention to. The used up shell of a once pretty decent sci-fi franchise ain't one of them, not least because it isn't worth hating.