Tschuligom originated on ebay Kleinanzeigen (platform for classifieds, kinda like Craig’s list or FB Marketplace). Its a reasonable assumption, that it was first used by someone who’s first language is not German and who wrote it down like that. So not that far off.
A lot of people are deathly afraid of self reflection, of thinking about themselves, about their own behavior and how it affects others. Because if you reflect on it, you might come to the conclusion that you have to change something about yourself. And that is hard work, that a lot of people simply don’t want to do (which I think is the reason for many things going wrong in the world). Being able to express emotion is a sign of the ability to self reflect, to be aware of how one feels and being able to communicate that. In a way it makes people aware of their own shortcomings, which is why they want to avoid it.