> he quietly admitted online
How does one "quietly" admit online?
> he shared his developer account with a relative who was making scam apps and doing bad stuff.
> his account was indeed committing scams and bad stuff.
This is incorrect.
The story was actually covered by Daring Fireball https://daringfireball.net/2016/10/apple_dash_controversy and well as by Michael Tsai https://mjtsai.com/blog/2016/10/10/apple-and-kapeli-respond/ and others.
Popescu said, "3-4 years ago I helped a relative get started by paying for her Apple’s Developer Program Membership using my credit card. I also handed her test hardware that I no longer needed. From then on those accounts were linked in the eyes of Apple. Once that account was involved with review manipulation, my account was closed."
Popescu also published a recording of a phone call with Apple (which by the way completely destroys your narrative of "quietly admitted online") that proved, among other things, that Apple did not consider Popescu himself to be a scammer. Moreover, Apple later allowed the removed app to return to the App Store: https://blog.kapeli.com/dash-for-ios-back-on-the-app-store
Gruber himself said in a footnote, "If, as Popescu claims the two accounts were run by two different developers, it would explain the extreme discrepancy in quality. The account that committed review fraud was publishing dozens of, well, rather junky looking apps of dubious utility. The other account only published two apps: Dash for Mac and Dash iOS, both of which are of outstanding quality and utility."
As far as I'm aware, Popescu never lied, whereas Godier clearly did.