The ability to stream media from legit paid sources. (Netflix, Comcast, max, disneyplus, prime, I don't know where the list is currently, but anything that bitches about user agent.)

I thought all you needed was browser DRM to run those? Idk, I don't use streaming services 🏴‍☠️

And Isn't TPM supported on Linux? It's been in the kernel since 3.20, no?

As for anti cheat, it's a bitch to deal with, I agree. Same with HDMI,I think DP is superior but people should have freedom to make their one choices.

And the rest? Idk. I use a web browser for all online things, from mail, to banking; so it doesn't matter whether I'm on Linux or not.

You raise some great points though. The average user isn't going to use workarounds or alternatives, so we should focus on actually solving the problem instead of saying use this instead.