yes, but how it supports modern hw? Btw there is modern hardware as well, but again performance.

The question how usable is it. While i would always prefer opensource over closed source, i don't mind to have certain closed sourced things if support is good and it works properly. I'm not asking Jolla to opensource everything and 3rd party blobs. But i would like to have it as much opensource as they call it opensource Especially promised parts, the UI parts they promised to opensource before even phone was released

Edit:
P.S. Do not jump at me, but when i'm saying Linux i mean not only kernel but GNU/Linux :P