It's a blogpost, made to express an opinion, so he doesn't have to say this. If this was supposed to be a serious article, or was involved in a serious debate, then it would be a different issue.

Second, I have a Firefox phone and no other phone. It's terrible right? Yet I'm happy with it, as it is less buggy than my previous phone, and it actually does what I want. The only thing that I'd like from it would be flac support, but it's something I can get around with a simple script. So, I can see how somebody could be able to live with a Ubuntu phone, and don't need to be paid to say good things about it.

Also, not throwing money at Apple/Google/Microsoft is a a big motivation, and a great pleasure.