"Don't crowd together" these days

What does the rabbi think is the practical meaning of "do not congregate" in our day? After all, the situation is as "communal" as possible – these do not eat from the kosher of others, these do not include others in the minyan, in customs, each person follows the customs of his ancestors who lived in this particular town and not the one next to it… It's messy and messy, and these are just random examples.
I thought – maybe the meaning these days is that you shouldn't do it blatantly (say, you can subtly dodge if you don't eat a certain kosher food – you don't have to state the reason) and avoid doing things in a defiant manner towards others who behave differently. In short, manners, respect for the customs of others, and common sense. Maybe not exactly the original idea of ​​"Don't crowd around," but it seems to me to be the closest thing that's practical in the current state of affairs.
What does the rabbi think?