If I had an SO at home, or elderly relatives, or a thousand other situations where I would be putting other people at risk, I too would probably stop seeing providers too.
But here is something to keep in mind about K-Girls in most parts of the country, they are already on "shelter in place" lifestyles during their working tour in whatever city they happen to be in. Except for the clients they see, they weren't going out a lot even before COVID.
I live in Texas, here are the numbers for Texas, there are roughly 30,000,000 people in this state. There are roughly 5,000 cases of COVID here, and less than a hundred deaths. That translates to 1 in 6,000 people having COVID, and less than one in 60 of those people actually dying. I am barely sixty, I haven't smoked a cigarette in well over 30 years, I am not overweight with all the underlying health problems that come from being a fat ass, I don't get so much as a cold more than every ten years or so, I am pretty much in PERFECT health. I am more likely to get killed by getting into a crash on the way to the doctor to get tested than I am to die from COVID itself.
That said, while I have zero worries about dying from the disease myself, I would feel guilty giving it to someone else, so "IF" I didn't live alone, and IF I were married or had kids, or had elderly parents that I saw all the time, most likely I would stop seeing hookers/SBs until this was over, but since the only person I am putting at risk is myself, I'd rather skip a trip to the grocery store where you encounter literally dozens of people than give up sex.
And if you are going to see hookers at all, K-Girls happen to be fanatics about hygiene, none of the ones who "tour" have children or families with them, the only people they come into contact with are their customers.