Nope. Runs Linux and there are launchers for pretty much all the other games stores. It’s just a significantly smoother process for things you have in Steam because of the work Valve has done on Linux compatibility.

Not necessarily. I’m on a daily medication that has a generic but is available in both extended release and immediate release forms. The extended release provides a more consistent dosage and has historically prevented me from getting sick. The immediate release causes inconsistent spikes and I have a history of getting sick on it. Insurance refused to pay for the extended release type for about 2 years before it made it onto their “formulary.” In the meantime I was using GoodRx and paying $100/mo instead of my paid health insurance pharmacy plan to make sure I wouldn’t get sick. The person I spoke to at the pharmacy management wing of the insurance company literally told me “you can get an app on your phone which will tell you when to take the immediate release medication.”

Seconded. I just used it this weekend to go from a 1TB drive to 2TB drive on a system with a single NVMe slot. Connected new NVMe in an enclosure, ran the copy, and the system shut down when done, I physically swapped the new drive in and it booted first try.

I use it when casting my patients who have a partial hand amputation. It works great as a separator for casting agents and allows me to easily easily slip a cast off of them. It also helps prevent ripping out too too many hairs during the process.