Oh for sure criticism is valid, but it’s funny how people always forget all the actual good stuff being added, too.
In general, not just Firefox-specific. People constantly forget how while Google search results have gone to shit, empyrical analysis showed that it went to shit more for other search engines (meaning if anything Google got comparatively better, but of course everyone got worse across the board, too). People constantly forget over all their little issues how some countries, including mine, have swapped >50% of their energy (from ~0%) to green energy in just 10 or so years. It’s too easy to see only the negative things.
There’s the compounding issue that something that seems simple on the surface, say, pairing a pair of bluetooth headphones, is a convoluted mess of super-complicated shit on a technical level.
And to even handle that, the engineer making the app that handles these does not know about how to sync an L and an R headpiece. And the person who knows about that does not know how to establish contact via bluetooth. Etc. It’s layers upon layers upon layers of tricky technical stuff. Each of which has the ability to propagate buggy behavior both up and down the layers. And each engineer probably cannot easily fix the other layers (they’re not theirs), so they work around the bugs. Over time this adds an insane amount of complexity to the code as hundreds of these tiny adjustments are spread everywhere.