hello @Joshua-and-Gretchen0 and welcome to ABB CC from a fellow Host across the lands and oceans in Auckland, New Zealand.
How long are your Guests staying for?
Are they staying long term?
If they are staying only for a short period I'd be inclined to take it like water off a ducks back and let it slide.
They are Guests in your home and it's your choice what you have and provide to your Guests.
The world has sadly become very much Super-Sized in many things when there's nothing wrong with smaller and perfectly formed and functional.
If you had a Guest who perhaps has an eyesight / visual impairment, it would perhaps be something to consider changing it, alas most people in that category are very gracious people and wouldn't be likely to make an issue of the size of a TV.
All the best