Depends on when you used it last time. On Linux we have two graphic systems, Xorg that doesn't support it, and Wayland that supports it out of box. Some distros switched to Wayland years ago, others still prefer Xorg as the default option, just change to Wayland during installation. I have 2 screens, each with different resolution and it's all fine.
>- Scroll inertia thing is fucked on Linux. Trackpads are not fun to use.
This is highly configurable on Plasma (KDE). I would say, too many possible options are given, but it's not as bad as on Windows where on one laptop double tab is double click, on another it means scroll-click. Plasma tries to fit everyone, but requires some turning like this.
>- I love clipboard managers, keeping history of clipboard, allowing search in previous entries etc. All solutions on Linux have been simply bad. And as far as I can tell, it is not even possible to properly do it on wayland.
We're back to Plasma, you can configure global clipboard and screen-independent clipboard, they would also share history and clipboard recorded is enabled on default.
>- Laptops do not sleep properly. I tried 2 different devices, more than once they heated up in my backpack. I can't have that.
This still suck very much, welcome to systemd integration layers that need to be done as root and you never know if it's working until you test it after a reboot.