Syfy's moves are what gives it the bad rep
The weekly Syfy produced movie like Sharknado are what do. And as far as Sharknado, at least it and none of the actors in it take it seriously, making it far better than most of their movies with plots like "a comet knocked the earth's core out of alignment which will cause all life to end in a week, but this group of four intrepid people who include the one person on earth who foresaw it have a plan to re-align it and save everyone".
Sharknado is camp, or at least an attempt at camp, while most of those movies are attempts at actual movies which is frightening. MST3K wouldn't have to look at the back catalog of 50s B movies to return, they could just do an episode every Sunday making fun of whatever Syfy showed the previous night.
The series Syfy develops usually aren't that bad. I only watch a handful of them of course, some fit my taste and some don't, and some are produced on a shoestring budget, but none of them are remotely as terrible as the average made-for-Syfy movie.