Your last paragraph says it all.
Seeing the high rise "water falls" was one thing; but seeing many many images on social media of the damage done to many buildings, one has to question not only the quality of the construction, but also the ability of Thai emergency services to cope with a "small" disaster.
Seeing many videos of people running out of buildings and along streets in downtown Bangkok, I thought, what would happen if a few of these tall buildings collapsed, if a building collapsed onto a BTS track? Yesterday's quakes just needed to be one magnitude stronger or a few hundred kilometres closer to Bangkok, then ...
Another report this morning stated that Bangkok Governor Chadchart Sittipunt ordered 130 building inspectors to inspect structures - only 130 inspectors for all of Bangkok, how long will it take to just inspect any building which sustained damage yesterday?