One of the problems has been that most users have requested that quotas get updated as fast as possible and that they should be consistent across regions, even for global quotas. As such people have been prioritising user experience rather than availability.
I hope the pendulum swings the other way around now in the discussion.
[disclaimer that I worked as a GCP SRE for a long time, but not left recently]
Not sure if you'll get an answer (I'd be interesting in a response as well), but from the blog in their profile it looks like they moved to be a 'member of technical staff working in the AI Reliability Engineering (AIRE) team at Anthropic'. So it might have just been an upward move to something different/more-exciting.
I hope the pendulum swings the other way around now in the discussion.
[disclaimer that I worked as a GCP SRE for a long time, but not left recently]