They should be cancelling the assembly!
Imagine the fine witness that would be given if a JW circuit assembly were to be a source of many infections. I call to mind the story of the South Korean cult that was at the source of many infections in that country.
Another related thing: in at least two occassions, preaching JW in The Netherlands have had the police called on them. People thought the JW were trying to scam them with their Corona virus stories.
There have been a few criminals who use Corona virus stories as chat tricks to scam or rob (mostly) elderly ppeople. Apparently JW today look and sound suspicious enough to be seen as scammers....