That would result in feature bloat and products, if they ever make it to market, that don't address consumer needs. Competent management is just as needed as technical contributions.

That's indeed exactly what happened. Lots of moonshot products that were dead on arrival such as FirefoxOS (and TV/IoT) or BrowserID, features nobody really wanted, while taking away features that people did want. Even right now, with their "refocusing" they killed or stymied features/products that people do want or at least gave them some rep with the power users and tech people (aka the people who will later recommend/install the browser to/for friends and family), e.g. devtools and MDN.

One of management's biggest jobs at a company like Mozilla is aiming developer resources at the problems that do address consumer needs. In the last few years, Mozilla hasn't really been doing that, so it sounds like they need new management because the current management isn't competent.

Mozilla already has a ton of useless products and features without a market fit due to incompetent management...

That is just absolute unmitigated nonsense. Teams require more than just "people who code" and what you describe is a highway direct to disaster.

I can't stress enough how important and amazing MDN is.

It's probably (one of) the main things I think of for what keeps developing for the web a somewhat sane and cohesive experience.

MDM is great! And its filled with sample code! Almost like it was written by someone who can code...

I recommend this read:

https://www.joelonsoftware.com/2006/04/11/the-development-ab...

People leave jobs for all sorts of reasons that have nothing to do with the company's overall health.