It’s a very clichéd response, often spouted as a knee-jerk reaction to something you aren’t personally in the mood of discussing at the moment.
Any disagreement can evoke emotions, whether or not it’s the biggest issue.
Also, this is often used to degrade the importance of what is “merely” a Mitzva but doesn’t make anyone rich. Whether or not you use it in such instances, just realize whom your audience is associating your position with.