Ask HN: Raspberry Pi 400 as media PC?

I'm thinking pretty seriously about getting some sort of media center pc set up for the kids (preschool age) to watch shows on. Currently they have just commandeered my wife's laptop since she uses her phone almost exclusively these days.

Part of me thinks staying with a fully functioning computer is the way to go, and that the new Raspberry pi 400 keyboard pc thing might be a good fit for that.

And then part of me thinks I should just get a roku and call it a day.

Either way I'd have to buy a monitor. I could also just get a smart tv I suppose, but I really don't care for TVs with all the "smarts" built in.

Thoughts?