I'm no doctor, but I suspect the conference organisers wanted the conference to focus on diabetes. Rather than exploring whether the USA is a "free" country where anyone can say anything about the government, without consequences.
One of science's most critical roles is to inform policymakers. And if they can't do that job effectively then it's right and just to point out the problems preventing it. Scientific conferences that fear critiques of the government chill new scientific publications.
It's not like they were handing out "Trump sleeps during press events" posters. You should read the article they distributed, it's very relevant to the conference attendees.
Yes, but this detail is crucial to continuing to make progress on diabetes treatment and research. So it’s actually more fundamental than anything else.
> suspect the conference organisers wanted the conference to focus on diabetes
The article they were distributing is pretty clearly about diabetes. If the actions it describes continues, significant efforts towards treating and even curing diabetes will be lost.