The pain level in China is wear a mask, gloves, wash your hands incessantly, hunker down in your room, eat room service during your layover, and fill out a few forms.
The real pain is dealing with everywhere else. In SYD, you are required to self quarantine in your hotel room. I have not been to SIN but evidently you have to stay in some kind of hostel like place with shared bathrooms. I also believe that Taipei requires a quarantine period. I’m sure that you have heard about the crew in Manila that spent 20+ hours on the airplane on the ground rather than go into quarantine. If you are deadheading home as a passenger you must enter in one of the designated gateway cities and go through the Spanish Inquisition with customs.
Our own FDX captains are denying jumpseats to our crews who have been in China.
Once you finally make it home, you can look forward to two weeks of health monitoring.
Plus anyone who hears that you have been to China will treat you like a leper for the foreseeable future, possibly even your family.
All this for 4.5 hours of pay per layover, not per day.