I think for users who don't want to learn about their computer and just use it a (new or used) Mac is the best option if you want cover many use cases.
Linux on Desktop is especially great for used Laptops. In that case the Linux community had a bit of time to adjust to the hardware.
Laptop also offer a well defined hardware environment where you know exactly what's inside.
Once you additional devices the range of hardware that needs to be supported is so much wider and so is the risk that something does not work.
However, especially for more casual users to just use your Laptop and not connect anything ever is in my opinion a quite common use case. There you can optimise to support some Laptops really well. And that is where Linux can shine.
Linux on Desktop is especially great for used Laptops. In that case the Linux community had a bit of time to adjust to the hardware.
Laptop also offer a well defined hardware environment where you know exactly what's inside.
Once you additional devices the range of hardware that needs to be supported is so much wider and so is the risk that something does not work.
However, especially for more casual users to just use your Laptop and not connect anything ever is in my opinion a quite common use case. There you can optimise to support some Laptops really well. And that is where Linux can shine.