Just because an airline is "point to point" doesn't mean airports should not allow passengers to use facilities that exist anyway. It would just be a case of passengers (of course, those without hand luggage) getting their BP scanned and clearing security in one place instead of another.
At many other airports around Europe, passengers can get off one Ryanair flight and get on another flight without going anywhere near immigration and security.
Why not allow passengers (without luggage) to use facilities that exist anyway, while relieving other overcrowded facilities in the airport (immigration and normal departures security).
You have to clear immigration regardless, passengers with hand baggage are only saving a few minutes by using the transfer route or exiting and going up to security.