An interesting topic and think I would go along the sames view as f40.
As crew myself when I travelled on an airline using plastic gloves to clear in I felt insulted as a passenger and it has never been an issue for discussion in my airline.
Passengers do not get the same respect when handed trays of open food by crew, when they cannot be assured of their standards of cleanliness!
Lets face it - this is a customer service industry although crew are there primarily for the safety of passengers. Ads for cabin crew do tend to state the importance of experience in customer service, as opposed to knowledge of first aid, safety training and levels of hygiene.
How would the crew using plastic gloves feel if they went into a restaurant down route to find the staff clearing their plates away wearing plastic gloves?