surely even Amish are fully appraised of the virus.
From what I've read, yes - though how well and the amount of compliance has varied widely between communities with some being badly affected.
There is some writing that it's largely related from what I've seen to how well the local mainstream health care (which most Amish communities don't tend to use) has established relationships with them. Better connections and trust, the more likely they were to not do high risk activities including church services, particularly with singing, even when legally allowed in their area.
Amish, unlike the Brethrens already mentioned, do tend to be diligent in reading material from sources outside their community as long as they trust it and in some places in the US, medical centres make newletters specifically for the Amish community.
Having worked with Chasidic community for a while (which in my and many areas have posters of their own separate police force for issues), I found that varied widely between communities with some having a lot more behaviour and information control than others. Many have been supportive of efforts to deal with COVID, but there are pockets.
Not an excuse for this behaviour but, as Red said, I can see if those in power within the community said come party, the response would be what time which is an explanation for how we end up with 400 lawbreakers who yeah possibly knew, but as a child I definitely saw laws being broken and covered up for those connected to the power structure.
Of people I know now, no, but I could see some religious groups I grew up near definitely being able to try to pull that. It's difficult to find ways to support people within and those who want out and I agree that the pursuit of those to punish should be on the power structure rather than the easier low hanging fruit that will have far less protection.
onlychildandhamster Different community, but I had similar threats when I was a teenager - that if I'd left they'd take my children as they would 'belonged to the church'. I immigrated and had to get British police involved at once point as I got contacted by a member taking pictures outside my place of work.
It's a religion not a cult
That line can get a little blurry at times and by law to my knowledge there is very little difference.