I like how you use "perceived" to modify Linux's deficiencies but "frothing-at-the-mouth" to describe individuals whose perspectives differ from yours. It's just so nicely objective.
Reading comprehension: "perceived" refers to the "injustices of a world ..." in my comment. Also, I've met plenty of people who disagree with me who don't froth at the mouth. For instance, BSD vs Linux used to be a Topic of Debate on the internet, and often the BSD guys would be fairly rational about what they preferred (of course some of them frothed too, just like some of the Linux fans).