I think there is too much focus on Regional airports only flying to & from Bangkok more cross country flights are needed. Chiang Mai to Udon, Ubon & Pattaya (UTP) exist but not on a daily basis. I have to assume the demand is just not there.
Buriram airport - in the middle of no where - is undergoing a major expansion and currently only services Bangkok (DMK). Some one is looking to the future when the sea level rises & "swampy" can only cater for sea planes.
However in the short term I think the Thais like their big family orientated SUVs & Pick Ups too much to consider flying for them the motor car is king and makes sense. It is not uncommon for families to drive from Chiang Mai to south of Hua Hin.
I thought the reporting of a suspects Nationality was not good form to be quoted in the media anymore at least until convicted.
In this particular case and in law the suspects Nationality has zero relevance until convicted.
Most if not all Thais burn - not just the farmers.
Thais seem to do whatever the village head man says.
So make all village head men liable for illegal burning in their area.
Fly anywhere at night and on take off & landing you can see all of the small homestead fires in addition to the fields.
Even the central reservations on some sections of dual carriage ways have scorched earth signs.