I think you're projecting. No one who enjoyed the advert is looking down on anyone. It's just normal life for many people in Thailand.
You're looking down on working class Thai people, along with anyone else you can.
Most foreigners don't have your weird obsessing with the elite 20% of Thais.
Again, your own biases are coming into play here. As above, these aren't wealthy people in a high-tech sector. You're making that up due to your lack of tolerance of working class Thais.
You seem to have this weird problem where you'll kind of acknowledge that it reflects reality for 80% of Thais, but then come back to trying to make out that talking about it is bigoted.
No one is bigoted, except for you, and no one is viewing Thais negatively, except for you.
You might want to take a step back from this and think for a while.