I think that bad worldbuilding exists in both spec-fic and contemp-fic genres.
In contemp-fic, it often takes the form of setting your story in a place you obviously have no clue about, such as putting distant things too close together, or getting details wrong about culture/festivals/traditions. But other times, bad worldbuilding takes the form of turning into a guidebook-- where you're overly anxious to show that you've done your research, and you want to put it to good use, even if it's jarring and takes the reader out of the story. In general, though, generic cities are accepted as generic cities, and if there's any local color that influences the plot, the important bits get sketched out, and everything else is assumed to be interchangeable with any other place.
In spec-fic, bad worldbuilding often takes the form of not setting things up ahead of time that x, y, and z is possible, and then having x, y, and z come out of nowhere and the reader wasn't prepared for it. For example, I remember one book I read (2005'ish? from the library?) that was about a sorceress who was hired on to protect a royal from a demon who was supposed to attack him in two weeks' time, or whatever. 95% of the book was a boring waste of time, where absolutely nothing happened, and the sorceress was just waiting for two weeks to pass. In the last chapter or two, it suddenly turned into a contest where the sorceress and demon were fighting each other, shapeshifting like maniacs, and chasing each other across dimensions. There had been absolutely nothing that indicated that kind of magic was possible-- the most she'd done up to that point was repel a mind-reader who was trying to access her thoughts.
So I think we expect more from spec-fic because, by its nature, it's specifically not-here, so we want to know what it is. Not, like, "What's their favorite kind of cake?" when cake has nothing to do with what's going on, but more like how we'd expect more worldbuilding in a historical piece set in Heian Japan or Montezuma's court or the Suri Dynasty. We know that it's clearly Something Different with the food, with the architecture, with etiquette/manners/social hierarchy, with what's taken for granted, with what's embraced and what's rejected. So just like I'd be unhappy reading about something set in a Ming-era Forbidden City populated entirely by Americans with 21st century opinions and sensibilities, I'd be unhappy reading about a bunch of aliens, elves, space stations, or fantasy kingdoms all mirroring 21st century America. I'd like to see more creativity, and be able to understand "it takes all kinds", even if I don't necessarily agree with the details of, say, Klingon culture, or Vulcan culture, or Barrayaran culture, or Betan culture, or whatever. And yet at the same time, you can use those worldbuilding elements to make commentary on modern culture.