R Heineman was asked during 2020 lockdown, whether it is possible to make a minyan with several families each standing in their own yard, so technically within the law. I think the questioner was not sure that this will count them as one group. The psak was – no, because a passer-by will not look carefully whether you are within the law, he will just see Jews doing something inappropriate. Then, he said, when some Jew will be in a need of a ventilator, someone might deny him one based on the opinions going about the Jews.
Beitza 8 regarding not shehting koy on yom tov – do not do a chumrah that will look inappropriate for an uneducated person.