Tweets hidden behind warning are not found
Take this tweet which Twitter hid behind a warning: https://twitter.com/realDonaldTrump/status/1313449844413992961
It's not found on Nitter: https://nitter.net/realDonaldTrump/status/1313449844413992961
The tweet is also missing on the profile page

`This Tweet violated the Twitter Rules about spreading misleading and potentially harmful information related to COVID-19. However, Twitter has determined that it may be in the public’s interest for the Tweet to remain accessible. `