Sorry to be pedantic, but seeking clarification:

Theres no doubt in my mind that Linux phones couldn't be great

You meant that you have no doubt that they could be great, right? Your next few sentences make it sound like you're saying that there's still hope, but this first sentence essentially states, "even if all of my doubts were removed, Linux phones still couldn't be great."

If I'm misunderstanding, then I'd really like to know why you doubt Linux mobile as a platform in general.