There are lots of individualists that will flout advice, but there's also lots of people that will isolate themselves in quite a paranoid fashion.
I think there's more of the latter.
I think there's more of the latter.
So less dramatically: individuals can (and will!) reduce their exposure to infected people that make poor choices.
Of course the more people that do the right thing the better, but it isn't a situation where the outcome is controlled just by the worst actors.
(I'm being sarcastic, but changing the exponent is (literally) what all the public health messaging about flattening the curve is about)
Community mitigation changes the rate.
https://www.khanacademy.org/economics-finance-domain/core-fi...
By that logic, unless you hermetically seal yourself from the outside world, you are still putting everyone else at risk.
And in either case, by that same logic, isolation apparently doesn't matter, so might as well still go to the bar.