Update. Therese Choquette ran searches on #PubMed and may have found gaps corresponding to terms banned by the #Trump admin.
https://www.linkedin.com/posts/therese-choquette-former-vallerskog-1531132_pubmed-activity-7301996327691816961-afAN?rcm=ACoAAADEjlkBbyOxuygZagmqeEC6540rx1UQQSs
PS: Unfortunately she compared US PubMed with Europe PubMed Central, which is apples to oranges. (PubMed is metadata-only and PMC is full text.) Can we crowdsource some systematic searches comparing (1) PubMed now with PubMed before Trump, e.g. in the Wayback Machine, and (2) US PMC with Europe PMC?