I want to up vote this more

I think this kind of a good thing.

Those of us with long enough memories will remember a long tail of Mozilla building stuff and abandoning them, quite like Google.

The two that genuinely hurt me were:

• Firefox OS - honestly great. I still have my Firefox OS phone sitting around in a box somewhere.
• Mozilla Persona - an authentication service, was great and still better than the existing alternatives

But the reason I think this it is a good thing, is that they’re focusing on their core product. For me Firefox is superior in many ways to Chrome, Ad blocking is an immediate example of that. They need to keep Firefox being successful.

Another reason I think this is a good thing is that there must be new people coming to Mozilla and Firefox who don’t know the history. And it’s great that there are new people like that.