OkCupid prompts users of Firefox to "consider different software"
okcupid.com
okcupid.com
But alas, it is not a technical reason. Nor even a product oriented one. It is a political statement regarding the head of the nonprofit Mozilla Foundation. So he made a mistake. Once. Maybe many times. That's his personal dealings, and while one may dislike Eich personally for this, and one may be inclined to not vote for Eich in, say, a public election, I find it absurd to protest a product that has but a tenuous connection to the man.
Firefox is, has been, and probably will be for a long time into the future (we hope) a product of many hardworking people, perhaps the least of which is the CEO, so far removed from the product we all know and (some) love. The speed, the engineering... Has nothing to do with Eich. He drives the overall vision of the foundation, naturally, as CEOs do. Does his personal preference/mistake mean he's going to destroy Firefox? No. Does it even mean he will destroy Mozilla with his personal viewpoint on social issues? Probably not. Does it mean he a "bad" guy? Well, on the whole one is inclined to say no, although it will and is argued he has a character flaw, this may be true.
The philosophy of dropping one of the most widely use browsers (outside of corporate environments) simply due to one man's one-time view... Seem absurd.
(I've tried my best to avoid putting my own opinion on his viewpoint in here, but perhaps he's made a mistake or two in the past. Given the amount of criticism recently, this much is clear, now.)