I thought it was a cool flight. No one was even aware of the small bird overhead, I see no harm in the op, day or night.
I regularly see hazardous ops at our field: planes poorly guided during takeoff and landing, flying overhead/behind the flight line, running into the pits, etc. I saw a 1/4-scale Pogo fly away 20+ years ago, about 20 pounds and a gas Zenoah pulling it. Being at a designated field doesn't make the operation safe, preparation and attitude do.
I think Brandon's one of the innovators, what's recently been called an outlier. You may not agree with his methods, but it appears he is very prepared and knows his stuff. Returning to base at night is something maybe 1% of the RC pilots could do, a demonstration of real skill. Even if the Stick went out of control, chances are it would only get caught in a tree, not 'crash into a garage full of gas cans'.
Also, our hobby has survived fine up to this point with fly-aways, crashes, etc. I'd say we've already proven ourselves to be responsible, especially given the post-9/11 hypersensitivity.
IMO, the Feds are the ones who need to be watched and closely regulated, not us. But that's a whole 'nother thread.