Yeah, that's one of the reasons I find it strange people use that game as some example of universal virtue everyone must follow. Germany was knocking Brazil out of the tournament, Brazil happened to be the host country, and even with everything being 100% equal, of course you're going to see different players/teams/cultures respond differently to such situations.
You could make the argument that showing pride and happiness at every goal is in itself a valid form of respect, and either way, the Thailand game was a different situation: it didn't decide Thailand's fate, every goal scored potentially mattered for winning the group, and we weren't Thailand's guests. :P
It's weird seeing people turn "I felt kinda bad for Thailand, I wouldn't have personally kept celebrating" into hyperbolic nonsense about bullying or whatever.