When I was around 6 my dad overheard me and my older brother shouting the word "hypocrite" at each other. Curious, he asked us what the word meant to us.So true. One of my biggest bugbears.
If anyone ever searches for all the examples of people calling out hypocrisy on this site at least 95% of cases are where the accuser doesn't know what the term means.
"A guy's husband" we replied.
So yeah, people really don't know sometimes.