I might be out of the loop here. I know Nintendo is constantly swinging their lawyers around and Microsoft has put some barriers in front of running emulators on Xboxes. I'm trying to remember the last time I heard any Sony news about emulation though.
Last I can think of is whenever they removed the PS3 support for Linux in the name of "security" and had to pay out a class action settlement, but even that wasn't directly about piracy.
Amazing. One of the best purchases I've ever made.
It's rare for me to see games in my library that are not supported, although there are a few. But there is a difference between running and running well. Demanding games will get maybe an hour of battery life and the fans will be pretty loud the whole time. Some games (especially strategy games) really work better with a full keyboard and a higher resolution screen. Some games I just would not want to play on a handheld. But most of the time the games that I want to play work well.
One trick I use to get better battery life and performance is streaming. I use Chiaki to stream from my PS4, and Steam Link (as a non-steam app lol) to stream from my desktop. It's often worth it for the fan noise reduction alone.
It's even better at emulation. It's a great machine for PS2 and GameCube games- I have the back buttons and track pads mapped to speed up, pause, slow, and rewind gameplay and to control save states. I have not dialed it in yet, but I think with some tweaking you could probably use the gyro and/or track pads to do some good Wii emulation. 3DS and DS are great too, mostly because of the track pads. Anything older emulates fine, but isn't as impressive.
I have gotten PS3 and Switch emulation to work, but the fans go on and the battery life goes down, so I don't really use it for that. Plus storage is a bit tight and PS3 games are huge.
It does feel like Valve was just a little too early. I wish the screen was 1080p.
The 2230 SSD's that it uses were kind of uncommon when it released. The weird size made them more expensive and they had lower capacities. I managed to get a 512GB one, but I wish I could have gotten like 2TB. It seems like that's changing now though. Similarly, I wish microSD cards came in larger capacities. Storage just seems to get used up so fast these days.