Barney's completely dead now.
But trust me when I say this. There are crap tons of preschool programming. Like an excessive number of them, and it's mostly Nick Jr. I am NOT kidding. A new show gets announced almost every week. In the last month they announced a show about Genies, a show about Dogs (not Paw Patrol, a show with actual dogs), and turning some kiddy band they made up into spies.
The Barney movement was one thing. Nick Jr. just started doing original programming back then. They were sort of popular I think, at least until Blue's Clues came and blew the roof off and then everything had to copy that model (leading to Dora, of course). But what did Barney bring with him? A bunch of lame imitators like Bloopy? Nick Jr. essentially made it so we have entire networks devoted to preschool programming!!! That's some hard competition. Add to various internet sites and well... yeah. And they're all fantasy based. All cartoons about talking animals and fish and stuff with no grounding in reality. Not that there aren't ones that are good. Disney's line up is surprising ever since they stopped copying Nick Jr. They learned their lesson from Mickey's Clubhouse. But you got, like, Doc MacStuffins being the closest thing to reality, and even then she talks to toys. I haven't seen enough of it to really tell if it's all in her imagination like a Winnie the Pooh deal or if they really are alive in a Toy Story, but we can tell humans sort of way. Sesame Street had that grounding in reality when there were shows like Mr. Rogers and stuff.
Then again, the fantasy thing came from the 90's and seems to have been grandfathered in, even when they tried to move a little beyond that. I still don't get why fairy tale and nursery rhyme characters have such a hold on plots when they have perfectly good Muppets they aren't playing with. I've had that rant several other places, and essentially it's that they feel it's easier to drive a point across (like a railroad spike) using old fairy tale standbys instead of coming up with new stories. I can agree there's an easy association for kids, but they go so incredibly overboard with characters like that. And in the 70's up until very early 90's the fairy tale stuff usually kept to itself in skits like Sesame Street Newsflash. Then the whole 1993 shake up happened and they became a regular occurrence on the street. Still are.