I think, or perhaps it's hope, that's inevitable. My experience is that "social distancing" (how I loathe the expression, it's anti-social distancing) was given up on by almost everyone by around mid May, so perhaps two months is a psychological limit. The difference and problem of course being the visibility of masks and it not being as easy to dismiss a protester with a cheery "oops, sorry!" or a scornful "oh, whatever" as appropriate.
Before someone thinks that shows an awful attitude I should explain that for a time I would go along with the pavement dancers out of politeness - I'm not in the remotest bothered about passing nearby someone, but I had no desire to worry those who were fearful. There are limits to endurance though, and I'm afraid four months later the locktivists have exhausted goodwill. I'll treat any of these impositions with the contempt they deserve and the disobedience I'll get away with.