I'm always a bit confused when the argument is "there's just not that many apps" - it's such an unimaginative perspective. I'm getting the same use out of this as I am my Mac but with more flexibility in some areas. This with a keyboard is very productive at a desk and is a really cool way to do general computing stuff. I've got my bank apps in here, my home security stuff in here, my work collab stuff in here, Keynote works great to work on decks in here. I'm watching more movies and TV than I've ever watched because of this thing, on massive beautiful screens that are the size of my entire living room or bedroom ceiling. I'm spending hours on FaceTime with my other buddies and colleagues who have these, trading out sharing what we're seeing through our eyes via view sharing, brainstorming use cases, watching my buddy edit via his eyes on his Mac with virtual display, watching him be able to physically point at the timeline or video frame to help illustrate something, doing proof of concept commercial video shoot blocking by placing 3D objects with beautifulthings.xyz. Doing laundry, doing the dishes, cooking up some eggs and bacon, all while being able to watch a persistent piece of content in my peripheral as I do so. Playing battleship with a buddy in Game Room with our personas, and gawking at detail of the board and explosions when the missiles hit. Relaxing in the environments, or shutting out a distracting real-world to focus in on writing something or whatever you may be working on.
This thing is a really compelling computer in its own right, with a unique strength of being able to work well outside a plastic (or metal if you spring for $1500 Apple monitors) rectangle sitting on your desk. It's a new way to do everything, it sparks creativity, makes working fun again, and opens up the possibilities of what you can do in an unconventional space. I can sit on my deck, look out at the forest and have more real estate than just a tiny laptop rectangle.
"THERES NO APPS, FEED ME MORE STUFF TO DO" is a take I'd expect from a random YouTube comment, not MKBHD. But I suppose he's a busy guy and doesn't have time to slow down and appreciate this for more than the whiz-bang front-end hype experiences that may or may not exist today. More games and stuff would be nice and are coming, but there's plenty going on right now.
And for the "BUT I CAN DO THIS ON MY PHONE/TABLET/LAPTOP" people - generally being able to watch content or interact with something without having to hold a weighty metal rectangle up in my hands, whether it be in bed, in the kitchen, at my desk, on the couch, on a plane, wherever - is an amazing quality of life upgrade that feels like you just gained an extra hand.