I mean... I own both a LCD and an OLED Deck.

I would absolutely not use it as a computer without a dock and I certainly wouldn't use it as a media player.

Other handhelds maaaaybe. The Legion Go has a stand and detachable controllers, so it could be a thing if it didn't have the worst speakers ever devised by a human being. The GPD Win 4, the GPD Win Mini, the Ayaneo Slide and the Aya Flip all have some semblance of a keyboard, so you can get away with some stuff you can't on the Deck or the Ally. I don't think they make sense as a main computing device for the money, though, as they don't have even the Deck's low entry point as an excuse.

FWIW, the optical nub on the Win 4 is the best pointer device in any of these, and even with that and the physical keyboard I still wouldn't use it to replace a laptop for media consumption if given the option. If I had a single device I could pick up I would sooner look into the ASUS Flow line of convertibles than into any current handheld, although you can certainly get a much cheaper all-rounder laptop than that.