Hardware support can be a problem as well. There are many combinations that "just work" - definitely more so than 20 or even 10 years ago - but you still need to be careful with network cards, for example. And graphics is still kind of a mess, enough so that all major browsers are still either using whitelists to enable hardware acceleration on supported hardware (like Firefox), or straight up disable it by default on Linux (like Chrome).
Which translates to the other problem that is battery life on laptops. I did a fairly simple test recently that basically opens Reddit main page in Firefox & Chrome and then scrolls it slowly until battery dies. Running on the same exact hardware - Thinkpad T14s AMD gen4 - the battery life was reduced by 30% on Linux with default settings (= no hardware acceleration in either browser). Manually enabling it means that test cannot complete at all because both browsers randomly crash.
And then you look at battery life vs an ARM MacBook, and it's not even funny.
Which translates to the other problem that is battery life on laptops. I did a fairly simple test recently that basically opens Reddit main page in Firefox & Chrome and then scrolls it slowly until battery dies. Running on the same exact hardware - Thinkpad T14s AMD gen4 - the battery life was reduced by 30% on Linux with default settings (= no hardware acceleration in either browser). Manually enabling it means that test cannot complete at all because both browsers randomly crash.
And then you look at battery life vs an ARM MacBook, and it's not even funny.