It makes no sense to stop offering pillows on all flights - blankets and the seats can get as contagious as pillows. If TK really wants to be the health expert, they will have to put on one off disposable seat covers on ALL their seats which I'm sure they don't want to do.
I guess they can't see the effects for the reduced services because the world is not really open for flying yet. Once it's back to normal, I think TK will have to re-evaluate their strategy.