sigh. this seems to be getting out of hand...
(pun intended)
so.. let me add more
the thing about "everyone touches the tongs" - yes it's true. However, as aluded to a few posts above - you don't eat the tongs. Further, if one is especially concerned they can use sanitiser on their hands when they get back to their seat and before they eat, or if they use cutlery to eat the food they have taken, then the food is still, in theory, ok for them bacteria wise. Now of course 99% of people don't worry about such things and shouldn't. Even I as a compromised person would not be so obsessive, but I do use sanitiser in the lounge when I see it (seems much has been removed from QF lounges recently - but not all, as an aside).
I mean if one is going to start going to the level of "those grubby hands all over tongs leaving bacteria" type thoughts well you would probably not want to go anywhere public tbh - door handles, lift buttons, handrails, etc etc etc. A thousand touch points a day with multiple unknown people all using them.
At some point we decide what is the risk factor - for most, there's near zero. Our bodies have immune systems that deal with the usual germs 99% of us all carry around as a matter of course - even mine which is weaker than most.
I think this is different to people rummaging around in the basket of rolls or pulling, for eg, cheese or deli meat(specially a wonderful place that bacteria love) with their hands.
Sure, other cultures are different, and if I'm in one of those then I respect those. Here (oz/most of the west), there's a certain expectation of basic hygiene. People eating at home with their famlies or at a function I think is a bit different to a public place like a lounge buffet with hundreds and hundreds of people coming and going. However each to their own.
I guess the pandemic has made a lot more people aware of the risks and potential issues. I'm not talking of one particular virus in particular, but just in general.