DY, we seem to have a different recollection about specific case – whether it was illegal at the time. The lesson I learned is that if someone behaves irresponsibly or illegally, he should not be relied to for his judgment.
Please note that this is not just about different opinions. I am fine if you stand for kiddush, and I sit. The question is about several opinions, each of them having downsides. I don’t think even exacting Daas Torah takes you off the hook. Say, you go to the Rav and say – my son does not know how to swim, and he needs to take a dangerous boat to learn Torah. So, Rav says he has to stay home and be an ignoramus. It is still your fault that you did not teach him how to swim (Kiddushin 30).
Same here. If your posek determined that your community can learn and daven without SD and masks (reasoning that otherwise you’ll not learn at all), it is still your fault.
And the reason I talk about people walking in the streets w/out masks, because it is a shocking indicator how careless these people are even when a required effort is minimal.