Actually you're both right. (and you're therefore both wrong, because contradictions).
The "because ___" construct has the nice effect of making the listener associate multiple connotations of the ___ word. So in the case of politics, it means "handwavy politics without explanation" and "because this is always the excuse" and "politics fucks everything up" and all the other things you associate with the term. Similary because aliens invokes what you said, since we know that aliens are just a lazy excuse commonly used, and also they are basically magical beings (in common vernacular) so anything can be attributed to them (like fairies).
The "because ___" construct has the nice effect of making the listener associate multiple connotations of the ___ word. So in the case of politics, it means "handwavy politics without explanation" and "because this is always the excuse" and "politics fucks everything up" and all the other things you associate with the term. Similary because aliens invokes what you said, since we know that aliens are just a lazy excuse commonly used, and also they are basically magical beings (in common vernacular) so anything can be attributed to them (like fairies).