Most linux distros are easier than Windows installs if you include the MS account and other crap you have to click through.

If you (not your grand parents) understand the concept of hard drives and files, you could probably get your grand parents set up on Linux connected to the internet just fine on any PC that’s not some proprietary hellscape of hardware, because Linux will run on almost anything made in the last 30 years.

It only gets weird if you want to use a laptop with a dedicaded GPU ‘and’ an integrated one and only want to use the dedicated GPU sometimes and such.