Maybe it was unrealistic to expect it to work out - one relatively small company fighting with Google and Apple - but I guess some people are optimists and want to believe that the world can be made into something else than corporate dystopia or whatever.
Wanting to believe in something is a thing, neglecting your core product and users to bet on a personal belief is something else.
2. I thought they were bloody stupid ideas.
I'm not convinced that investing in ideas I think are stupid because things I have previously thought were stupid did well is a sound strategy. All it shows is I'm bad at predicting what will do well, so it makes more sense for me to invest broadly across as many markets as possible.
There isn't, of course. But that wasn't why it failed. It failed because it didn't answer any questions that weren't already answered, except for some (like "more privacy") that too few people wanted an answer to, to have a market. And that part, unfortunately, was utterly predictable.
Think low end android phone (of the time!) running software that was 10x slower than android's.
It's really hard to describe how slow it was if you didn't personally use a firefox os phone. There were times when it felt significantly slower than a 386 running windows 3.11.