I am certainly saying that a fresh install of Ubuntu (and a reasonable attempt to get over the initial issues eg. using a respin available on github) has too many problems for me to either live with or spend time investigating. Others may have more tolerance for fiddling around with OSs, but I've done my dash with that kind of stuff.
Maybe. But that has nothing to do with what I wrote.
> I'd be interested in the specifics
Would you? Or would you like to gather factoids in pursuit of your belief that everyone must make the choices you make?
> that you anticipate on supported hardware
Not "anticipate". Experienced, after installation (more than once). It was more trouble than it was worth to me.
> on supported hardware
As I say, I don't think there's a developer edition of the 9570. There isn't an extant linux driver for the fingerprint scanner, which surely there would be if Dell preinstalled linux on this model.