I today's interenet and wi fi days it is not uncommon to be on camera when visiting a home. My advice is to be on your best behavior, treat someone else home like your own and do not express a lot of emotion during the home visit.

There is time to express your feelings about a house outside of the home. Wether you agree with the seller or not it is their home and they can do what they want.

If you are looking for a home and the one you are touring with your agent fits wait until you get outside the home and make your best offer. At that time you can upon advice from your agent let the seller what you liked about the home.