Obviously the "laws" in Thailand can change in an instant and it's completely up to the authorities how they wish to enforce them. Even this completely one-sided article from a pro-drug website admits that bringing weed in luggage is causing delays in security lines due to lack of testing equipment. It's not a stretch to see this, as well as the attendant unpleasant smell, as sufficient grounds for "causing a nuisance" and incurring a significant fine for druggies, even incarceration if the laws are suddenly changed overnight. Or worse, corrupt airport security demanding for massive bribes so you aren't cited or jailed.
That is the reality. Of course, if you want to listen to the advice of a bunch of potheads on the internet and risk your freedoms carrying narcotics on a commercial flight, it's up to you. Incredibly stupid risk IMO when the drug product is available at pretty much any destination in the country. Seems like the druggies can't wait even a few hours to ingest this supposedly non-addictive drug.