I heard of someone who’s vet asked them to take in a stool speciman for their indoor cat and it wasn’t their regular check up time. I told them that since their cat is an indoor cat, I wouldn’t worry about a fecal exam until the next scheduled check up.
My two 7 year old cats are indoor cats, and I only go to the Vet every two years for a check up where they get their indoor rabies shots and Feline respiratory shots. My vet never asks for a fecal sample unless I see a problem as its not necessary.
If a cat got outside and caught and ate a mouse or bird and ate it, then it might warrant a fecal exam but otherwise I wouldn’t waste the money.