It's unclear what you're comparing it to, but yes, there have been tons of technologies that have either come onto the scene or come down in price significantly over the last 30 years. Shooting on digital allows many more options for the filming, editing, and post-production portions of television shows. Digital cameras produce better quality output than the video cameras of yore and at a higher resolution. There are inexpensive cameras that shoot in log and even RAW formats at 4k resolution. And having a full editing suite with color correction, compositing, etc. is now only tens of thousands of dollars instead of hundreds of thousands to millions.
Digital also allows for much faster turn-around, which makes some things possible that were not before. Back when the original Star Wars movie was filmed, for example, all those composites of space ships flying around shooting at each other were filmed on film and then optically composited together. It was a laborious process. 896
Now they can either film on digital, or create objects completely digitally without filming anything, and get very good to perfect composites. (By perfect, I mean not having to deal with variations in lighting on a green screen, etc. It comes out of the computer already matted the right way. Whether it looks good is another issue.) The software to put together foregrounds and backgrounds is easier to use than doing it by hand. (If you've ever watched the original Battle Star Galactica series, you'll notice there's only about 3 shots of the spaceships shooting at each other and they get reused over and over again, sometimes flipped to make them less monotonous.)
Back in, say, the 80s, it was unlikely that you'd do a lot of color styling of a television show because it was expensive to send the film out and to hire a colorist (or color timer as they were called then) to do the work. Now, every shot can be styled however you want and it can be delivered very quickly because there's no film to expose. You can either add color filters right in the editor, or send your footage to another app to adjust the colors and send it back to your editor for further processing and cutting.
And very popular shows are getting larger budgets. 1 season of Game of Thrones has about the same budget as a mid-size movie (about $6 million per episode for season 1 and looking like about $15 million per episode for season 8).
So all those things together make for some really compelling TV shows! Better equipment used to film it, faster turn around for complex things, better tools to edit and do other post-production stuff, and bigger budgets. 900