Man, just the "normies" user experience in general.
I've had so many issues from the start, even on "beginner friendly" distros. Hell, I'm a software engineer by trade - I literally use WSL2 every day for my job - but there are some things the OS should just do.
Prime example: wifi connectivity (er, just connectivity in general - Bluetooth included). It seems like every distro neglects this part to some degree. I've tried Ubuntu, Lubuntu, Linux Mint, Kinoite, countless others - but it seems like every one either has some form of Bluetooth connectivity issue (a la Kinoite not detecting my Bluetooth headphones) or a straight up wifi issue (like Ubuntu, Lubuntu and Linux Mint ALL not connecting to Panera WiFi on a wiped 2012 MacBook Pro - it was because Panera has a popup to accept wifi terms, btw, which is extremely common. Starbucks was broken too).
It's that sort of stuff that prevents people from staying on Linux. People DO go to internet cafes to hang out and surf the web. It's a helluva deal breaker that I need to turn on my phone's hotspot just to connect to some Internet and then deal with LTE speeds. And as for the argument of "well that's super old hardware" - it's prime hardware that people will try Linux on and get pissed off.
Also, Nvidia support. It's one of the most popular graphics card options - it's a deal breaker that it doesn't work out of the box on a lot of distros. Never ran into this myself, but just scroll here for a bit to see how prevalent it is.
I REALLY want to daily Linux but man, these issues prevent it (even now that I've moved on from the MacBook). If you really wanna help Linux grow, fix these problems and / or work on improving the "non-technical" user experience. You shouldn't need to know what KDE is to use your desktop, nor should you need to Google like 15 things to get thru the installer with certainty.
I know this will get a lot of hate, and I really really want to love Linux, but I've been burned often so I'm skeptical.
AngrilyEatingMuffins