Connect to WiFi properly in a Panera (ymmv, but this was my experience with 3 different Ubuntu-based distros)
Play pretty much any game (Proton has gotten us far but it's not the end-all-be-all)
Be usable without the command line at all (tried giving my GF Linux Mint, no it's not entirely usable without the command line, and I haven't found a distro that is)
*Run Nvidia flawlessly out-of-the-box
*Be backed up fully and easily (no, TimeShift is not easy, it's just easy for you after looking up documentation for a hot minute)
*Except immutable distros like Silverblue
*I know Pop_OS! comes with Nvidia drivers before anyone says that, but it's the odd-one-out
It's not just Nvidia, though... I tried running a popular vpn recently on Linux and was shocked to see it wasn't supported outside command line. This same vpn provider has an app for everything, even android TV and Roku of all things.
Just had a similar experience with Bitwarden. Works flawlessly on every device, but the linux vesion doesn't integrate with the browser (the app not the browser extension). I also had to do some special tinkering to make it accept self-hosted vaultwarden with self-signed certificate, because electron apps on linux don't use the internal's system trusted cert store ? Nah, you have to install certutil, and add it to a "sql database"... ⋮/
And i'm just starting as a linux power user, and it already begins to show why linux isn't "there" right now... But I don't see it as something bad, quite the opposite, linux is supposed to be flexible, open source, a playing ground for nerds... But people's desire to overcome GAFAMS monopoly slowly turns linux into something I hope won't hurt the community or make them part of GAFAM acronym...