Well I do follow Chrome dev. I'm in the browser code all the time. There is a ton of junk code that could be cleaned up and simplified, if that was their priority, without any special tooling needed whatsoever, just time and care. Their priority is not writing bug free code, but in adding more and more dubious 'features', and using this opportunity to further market their new AI god to young and impressionable programmers, as the other poster explained.