If you're old enough (meaning not that old at all), you'll remember a golden age of TV when one season reliably followed the next on an annual basis, if not slightly more regularly than that. Many mainstream shows would also pack dozens of episodes into one of those seasons, making for basically nonstop production schedules to keep the show front of mind for viewers.
The age of streaming might have brought in a range of top streaming services to give maximum choice to people, but it's also seemingly coincided with a much slower pace of production. Many shows take years between seasons, have weird episode counts and plot holes as a result – but Netflix has just demonstrated that at least one of its franchises can move at lightning pace.
