This is more applicable to chrome books than anything else.
Hell, put any old uefi usb into a Mac, hold down the magic button and you’re running something else. Gotta turn off a bunch of crap in the bios (for now…) on pcs but basically same.
Chrome books need you to completely wipe the system, reboot twice selecting developer mode, set a root password, use it to enable legacy booting (using the command line), in some cases install a custom firmware off the internet and in my case, *physically remove a screw from the motherboard * just to boot from usb.
That’s not to install anything, just to boot something other than chromeos.
There’s a bunch to hate apple users for, but the computers themselves aren’t it.
Edit: and the kicker is that google/Samsung/et al aren’t even luring you into the most locked down, shitty hardware on the planet with a treat like the device being considered a luxury or supposedly good ui or magic arm soc, they’re waving the cheapest laptop on the market at you using an advertising model to prop it up. They’re saying “yeah it’s not great but you’re poor and you can just ignore the ads, right?”