You've described it so well, nailed it. 👍
The problem is so many foreigners refuse to assimilate or just too old to learn new habits.
The Thais have their own driving/riding techniques, you got to learn these techniques or you will become bitter and miserable, angry with yourself and everyone on the road.
The Thai style is not the safest but it works for them, it's been working for them well before us foreigners came here.
Sadly most foreigners just prefer to be miserable and bitter, always moaning and complaining.