Imagine how we'd all feel about Heroes, had it ended after one season....rather than what they gave us later!Not everything has to be a trilogy of novels.
There was a time when the short story was the monarch of the sci-fi/fantasy genre. The shift away from that has more to do with marketing and the economics of publishing than whether novels or short stories are "better". If Marvel wants to give us a bunch of short stories, I'm good with that. It fits the comics genre pretty well.
That said, I'd have liked a different ending of WandaVision if that's all we got.....at least She Hulk had something of an ending.