I don't think this is an irrational step, dependent of course on the sensitivity and confidentiality requirements of the information exchanged between employees of a business or with outside entities. Many people have been set up to work from home for many years and may have had ample time to think through the associated risks and implement countermeasures. But for those who are thrust into the home office environment amid the Coronavirus concerns this is something to at least consider among the potential vectors.
