That's fine, but the reason that people object to things like this is that they have empathy for the victims and frustration at the system that allows it to happen.
The fact that these guys argued over a bill and one of them may have pushed a security guard in no way justifies what followed.
"I'm OK with it because I'm 99% sure it won't happen to me" isn't the way that everyone views the world.
This bad thing happened in Thailand, it was done by Thai people, it was done to foreign people, probably partly because they are foreign, and the response from the Thai authorities will likely be shaped by these facts.
All foreign people in Thailand are affected in some way by this event or the circumstances that led to it. Some people choose to ignore that, others don't.