OAuth Consent Screen Verification
It's taken me 6 months of back-and-forth to get my Chrome Extension verified, then I had another 4 apps verified in the space of a week, so either things are getting better or it was just finally my turn. They also use a 'user cap' system to allow new users to keep using unverified apps, but at 100 users this means many devs are dealing with unhappy users wondering why the software is suddenly "temporarily disabled".
I understand why Google cracked down on the scopes being requested as many apps were requesting very broad permissions unnecessarily... Hopefully once the initial massive verification of existing apps is done the process will be quicker, and people will feel reassured that extensions and add-ons are now being thoroughly vetted.
I agree with most that's said in the article though, deploying Extensions and Add-ons is complicated, confusing, inconsistent and poorly documented, especially regarding integration with CWS Payments which is MIA.