I think they're trying to be "edgy", without realizing what edgy really is. Either that, or it's an attempt to make it "cinematic" without realizing that doesn't work with a TV format. It's really easy to make it boring, and that's bad.
If you're replying to my point, then it's got nothing to do with that. Many of the conventions of how commercial TV is presented have to do with hooking the audience quickly so they don't change the channel and watch something else. Older shows often did it by giving previews at the start of the episode (shocking in today's spoilerphobic times). Teasers/cold opens developed for the same reason, giving viewers story before the main titles to catch their interest right away.
The reason for the changes in more recent decades is the relentless increase in commercial time, with ads taking up more and more of each hour. That required shows to become more compressed and efficient, and that's the reason long title sequences gave way to brief title cards and the practice of showing all the cast and crew credits at the start of the first act. Conversely, as TV grew more serialized, it became necessary for shows to have long intro/recap sequences, and those eventually evolved into what are effectively old-style main title sequences, but since it had already become a convention to show the title card and credits separately, they stayed separate.
Proper main title sequences are making a comeback in recent years, especially on streaming services and probably pay cable too; Netflix shows tend to have really long title sequences, up to 2 minutes. Without the time pressure created by commercials, there's room to include such extensive sequences without taking too much time from the story. But there are some commercial broadcast shows today that use them, e.g.
Orphan Black and
Killjoys.
Incidentally, movie credits have gone through a similar evolution. In early movies, they showed all the credits at the beginning, and only a recap of the cast list at the end. Then, as unions negotiated credits for more and more staffers, credit sequences got longer and they eventually moved most of them to the end so it wouldn't take so long to get into the story. Of course, some fillms adopted cold opens, like the James Bond films. And eventually we started getting films that held all their credits until the end. I think I read that George Lucas got in trouble with the unions for holding the credits to the end on
Star Wars in 1977, but the practice quickly caught on and now it's uncommon for a movie to show its credits at the beginning.