Comfort, not survival of the human race, is the purpose of a heating system.
Is an electronic thermostat appropriate for hydronic heating? How about for in-floor heating? Can you use a setback thermostat for hydronic or in-floor heating?
Them used to be fightin' words not that many years ago. Some folks in the industry would get pretty hot pretty fast because "by golly, grandpa didn't use that gol blame stuff and we don't need to either." Things have loosened up some, but we're still a bunch that doesn't like new stuff very much. (Well, except for new trucks. New trucks are great.)