Seems like they’re asking the wrong people, e.g.
https://nitter.fly.dev/igb/status/1569679325359919104 https://nitter.fly.dev/search?f=tweets&q=from%3A%40igb+mudge...
(Direct Twitter links: https://twitter.com/igb/status/1569679325359919104 https://twitter.com/search?f=tweets&q=from%3A%40igb+mudge+OR... )
The basic claim (from someone I understand was reasonably senior and worked reasonably closely to Mudge) is basically that the guy was not good for Twitter security and so to a great extent his whistleblower complaint is ‘Twitter put me in charge of security which was highly negligent of them’ eg https://nitter.fly.dev/igb/status/1562087069391785984