If you’re interested in loading up emulators and other games via desktop mode I highly recommend going over to XDA and checking out their articles for the deck. For example: they have a whole article about getting Minecraft java edition up and running on the deck (which is something one of my kids wants us to do).
It definitely does. Don’t use Apple products, but setting limits or bedtime alarms (on the switch) helps us all out. It cut down on the tantrums about stopping, it gives them the routine they need (we’re all on the ADHD spectrum in this house), and I set it up and it’s done (I have practically nil executive function).
Is it perfect? No. But it works for us.