If you look at where they invest their resources, it's Firefox.

It's almost funny because Mozilla critics are about evenly divided between "Mozilla needs to move beyond the browser" and "Mozilla needs to focus on the browser". And both groups are adamant that their view is obviously correct.

The state of Mozilla is evidence of the correctness of one of those group's positions.

I think not. The state of Mozilla is mostly the result of decisions they made in the past that are no longer operative, and factors that were never under Mozilla's control.

Mozilla bears a lot more responsibility (including ongoing responsibility) for its self-inflicted wounds than this common, comfortable narrative says it does.

This. I was so sad to find out that despite having a phenomenal CSS support, FF does not (easily) allow to switch off CORS, which makes it impossible for me to use at work.

They post bullshit blog posts advocating social goals while reducing the investment in Firefox. It’s sad.