I think the point is, as long as they aren't producing food for sale to the public, they can pretty much do as they like
Apart from clipping my hair back , so I don't keep pushing it out of my eyes, and washing my hands before I start, I'm not that fastidious and haven't killed anyone yet with my cooking
Research also suggests that extreme hygiene may be the cause of our ever more common, modern day allergies. Food for thought maybe?