What constitutes helping somebody?
What is the enforcement if this type order is broken?
I think you basically trust people to make a good faith effort to follow the laws the gov't sets down for the protection of all. The loopholes are fairly wide and generous. Hell, you can claim that walking around is your exercise.
You only move to enforcement when folks are blatantly flouting the law and especially congregating in numbers. And even then, police can simply give a warning and ask folks to return home. For those who prove stubborn and resistant, I'd rec a fine of say $50. Write em a ticket and let them continue to enjoy their unauthorized excursion in public. Or just ignore them if the numbers aren't large.
The goal is to reduce contact to reduce transmissions. So 100% compliance isn't necessary.
I'd also have police stocked with packages of masks, so they can hand them out to anyone bare-faced in public.
In Shanghai the lockdown was entirely voluntary for people. I could go out any time I wanted to anywhere. It's just that all businesses were closed except food and drug and big box stores and hospitals. So largely there was nowhere to go. Buses and subways kept running, intended to ferry essential workers to work.
It's sad that many Americans can't cooperate and take simple measures to protect the health of everyone in society. A very selfish and limited view of right s and gov't power.