My bet is that the people ignoring advice about social distancing are the very same people who park on the zig-zags outside schools, barge their way to the front of patient queues, hold up baggage check-in at the airport demanding upgrades and book holidays in term-time.
They've always felt entitled to ignore the rules, which they see as being for others, and they always will, and even if it kills someone, it won't be their fault. There will be some guff about it was probably someone else who infected the victim, or how they were old and sick and would have died soon anyway. Most likely they will never realise they caused a death anyway.
When it's all over they will be scoffing at the sensible and compliant for being frightened sheep and boasting how they came through unscathed despite doing their own thing throughout.
Oh, and these are the people who will fraudulently claim key worker status, bully headteachers into going along and laugh at exhausted teachers as they drop their children off and head for a day out.
It's a waste of time engaging with people who think only of themselves and their own comfort and convenience.