I was under the impression he was let go not because of performance, but because of controversy and lack of confidence and/or respect from a significant and growing portion of staff. At least that's how I remember it being presented.

Eich didn't lead Mozilla in its prime of browser market share, yet he is often brought up as if it were so.

He was CTO during that entire period, there are product leadership responsibilities associated with that position.

The Brave market share is completely minuscule compared to Firefox. If success is measured by market share, it is a failure.

Brave continuously grows and it grows rapidly. This is success.

It’s not possible to get from 0 users to 20% market share overnight. Brave is doing great.