This seems to ignore how boutique stores and high end retail operates. This is the standard of rent seeking middlemen stores. You still haven't answered why this model is appropriate for Firefox.

> We can argue about whether Mozilla's reviewer skillset is too low

We're not. I'm pointing out how simply taking the opposing view reveals that your reasoning could not possibly be correct.

> reviewing is a cost center that companies want to spend the minimum amount of money on.

Which is weird because I assumed the cost of re-creating the plugin yourself would be much higher than that. It's almost like continual failure of these simplistic analyses reveal that a broader examination is required.