Early footage/talks made it sound like a show created in the image of the more recent, action-heavy movies and not one based off of the Star Trek shows of the past. All the casting/directing/scheduling issues also added a level of concern. Also the fact that it was TV-MA-rated made me assume they were going for gritty over substance. And, on top of that, putting it behind a paywall made me actively root against it so I wouldn't be tempted to pay for yet another service for just one show.
It had a ton of things going against it since being announced. I'm glad it seems to be getting a somewhat positive reception.