YOUR AD HERE
Sounds like things turned from bad to worse:
"Google announced a change to Content Suitability settings for Parked Domains in Google Ads, effective October.
New accounts will default to opt-out of serving ads on Parked Domains."
As a reasoning, they cite the bad user experience. So basically they don't want parked domains anymore, maybe the death of parking will be sudden and sooner than anyone expected.
More reading:
https://www.seroundtable.com/google-ads-parked-domains-38021.html
https://domaininvesting.com/will-google-change-be-a-nail-in-the-parking-coffin/