Which Linux? Each distro is essentially a different operating system.
Modern means systemd, pipewire, Wayland, Gnome, an up to date kernel, etc... So the current Ubuntu and Fedora releases.
I've had 100% working laptops for 15 years now. Because I always run the newest Ubuntu.
Maybe I was too positive on Fedora (I was going by it's reputation, I use Ubuntu for work). Ubuntu is solid.
Link 1: screen only updating every 2 seconds, visual glitches. Link 2: brightness reset to full on screen unlock, fans turning on when charging. Link 3: bluetooth troubles, speakers cant be muted if headphone jack is on mute. Link 4: audio quality and low volume, wifi not coming back after sleeping. Link 5: fans being too loud, poor sound quality.
Either your Stockholm syndrome is affecting your reading comprehension or you just take bugs like these as part of the normal "working perfectly" linux experience.
Previous laptops (all ThinkPads) used to be able to get everything all to work (debian) but it did take effort and finding the correct resources. Unfortunately all the old documentation about this stuff is pre-systemd and UFI and it's not exactly straightforward anymore.
It also doesn't appear to be the case even now. I searched for laptops available in my country that fit my budget and for each laptop searched "<laptop name> linux reddit" on google and filtered for results <1 year old. Each laptop's reports included some or other bug.
https://www.reddit.com/r/linuxhardware/comments/1hfqptw/linu...
https://www.reddit.com/r/linuxhardware/comments/1esntt3/leno...
https://www.reddit.com/r/linuxhardware/comments/1j3983j/hp_o...
https://www.reddit.com/r/linuxhardware/comments/1k1nsm8/audi...
The laptop with the best reported linux support seemed to be Thinkpad P14s but even there users reported tweaking some config to get fans to run silently and to make the speakers sound acceptable.
https://www.reddit.com/r/thinkpad/comments/1c81rw4/thinkpad_...