So you think that amount of downvotes is inconsequential to the probable success of the show?
I'm not so sure, I think a good number can be put down to trolls I don't know if it all can though.
Sounds to me like yet another organized campaign to combat the evil "SJW" forces stealing science fiction from straight white men--or so these idiots believe. Word surely went all out to all the ComicsGate, GamerGate, MRA, incel assholes to try to sabotage the show preemptively.
In short, we're not talking about 400,000 average viewers who just happened to be turned off by the trailers and would have give the show a fair shake otherwise. We're talking reactionary trolls mobilizing as they too often do.