I go the other way. I start my diesels every month in the winter and let them warm up (until the temperature gauge is mid point which is usually a half hour. 3 farm tractors, and pickup truck.
I also add Power Service in the fall and a splash of biocide. Been down the algae road, it's expensive to eliminate.
Always did that with the big trucks (Road Tractors) that sat in the lot at the yard where I was employed.
I don't keep them on a Battery Tender either, I just isolate the batteries via a disconnect switch on each unit.