Yeah, it's got 256GB or 1TB of internal storage, so you can just use the microSD card to move the game from i.e. the deck to the frame.

Yeah you can use the internal storage and if you still wanted to copy the games across you can always do it over the internet (or LAN). I think Steam does have a built in way to do this now as well or you can just send it yourself as a file with rsync or what ever tool you feel like copy/pasting with.

You could also store your games on a NAS if you hate yourself (read/write performance will be pretty bad and result in a poor experience for most games)

I think this one is the default. You could make one, though

It depends on the game. I typically don't do AAA games on my Steam Deck. So, most of my games go on an SD Card. The games that need lots of HD assets, I put on my SSD.

Wait, what do you mean ate it?

My experience with playing games off an SD card in Steam Deck was... lackluster, shall we say (performance-wise).

I share your feelings about SD cards.

It's an option that you do not have to use.

I feel that. When I got my 512 deck I was worried about SD cards and game performance for my more demanding games. I haven't tried it yet but I've seen those NVME enclosures with PD pass-through. Have you ever considered those before? I know it's capped at what USB-C ports can deliver but I'm pretty sure it's better than an SD card...