You can still install android on them, BlissOs is a rom for x86 devices. Intel and amd gpu hw acceleration works ootb: docs.blissos.org/…/hardware-compatibility/If you just need for media consumption they are good, some apps don’t work as they only support arm cpus.
The reason is choice and support. On an arm android device you have to wait for the manufacturer for updates or to publish source, so someone can support the device for you. With x86 it’s just a normal, standard pc, you can do whatever you want.