Only you can tell for sure. If you use the deep litter method then he is most likely right. I do the deep litter method and only clean my coup twice a year. chickens will eat their own poop so walking around in some is really no big deal. I read from people on here that scoop poop out of their coup everyday. That too me is just too much work. I suspect these folks don't have a day job or something.
Many of the things we do for our chickens are not really need by the chickens, but are done under that guise when really it just makes US feel better. Like heating your coup in the winter, not needed, but so many people (me included!) worry about them when it is bitter cold out. I still don't heat my coup though. All it takes is seeing them out free ranging on a 10 degree day like it's nothing special to know this is right.