I have never run into this alleged issue. In fact, we have several times booked AirBnB homes in the town of my youth and hosted Thanksgiving Dinner for my elderly mom and siblings who are themselves visiting and staying in AirBnB's. Yes, we asked the hosts before booking if we could cook and host a Thanksgiving Dinner and received their OK.

I truly love AirBnB and have stayed in them in most all my business and pleasure travels to Europe, Canada, Israel and across the USA.