I'd go further and say STUPID. I'm sure you'd feel quite good sitting in court one day after you flew across a runway and caused a GA aircraft to crash. Sitting there as the cool drone pilot, looking at his wife and small children, whose lives...
I have both drones and do commercial work. If I could only have one of them, it would be the Mini 5 Pro with the RC Pro 2 controller. That's about all I fly anymore, other than my Air 2s for mapping jobs. The only exception would be if I'm taking...
I take my Air 3 and Mavic 2 Pro on every real estate shoot I do and 90% of the time I use the Air 3. I've never had photos or videos rejected by my clients with either. I mostly use the 2 Pro for other missions that require DroneDeploy.
"I'd have to be real careful crossing the runway"
Why would you fly anywhere near a runway of even a small airport? At least it will let you takeoff, then fly away from the airport. Anything else is just irresponsible.