I wouldn’t want to work next to someone who's been abroad on a plane, I think the risk is higher, huge hotels, shared swimming facilities, too much alcohol etc plus the day trips, boat rides, water sports - all mixing with a variety of people from other countries.
Presumably you also object to sitting next to someone who has been in a busy supermarket, been to a pub, been to a restaurant, been to the cinema, used public transport, visited a local tourist site or beach, etc. As they are all things we can legally do but have a little greater risk.
My holiday doesn't involve a plane or an airport, it doesn't involve huge hotels and pools, I won't be doing water sports or boat rides and we won't be drinking excess of alcohol. I'm mainly going to areas where the transmission rate is much lower than where I live, where the active cases are zero or extremely low and there have been no deaths for a couple of weeks or more. Unlike the city I live in where it is presumably okay for me to go to work in the bus, go shopping, go out for a drink, etc.