There's a difference between people:
- Not liking it because they don't think it's good
- Not liking it because it's not what they wanted from a Trek show
- Not liking it because they're bigots and are actively fighting culture wars
TNG may have got some of the first two, but not the third. Some will try to hide it within the other reasons, but there are plenty who are shamelessly open about it. Elon Musk shared a moronic tweet attacking SFA on culture wars grounds, which attracted thousands of likes. That sort of thing leads to brigading and review bombing (note the abysmal IMDb rating).
It matters because anyone not aware of that context who looks the show up with a view to watching it will be deterred. That the show's chances of success and ultimately damages Trek's future.