I completely agree with this reasoning. I'm not concerned that a stranger who met me on the internet finding my real location. I have a greater worry about the opposite problem, that someone I know already IRL will read my posts and think, "Hey... wait a minute! I think I know her!" Then he'll go and read a whole bunch of my past posts and figure it out, and I'll be really embarrassed depending on who it is and how indiscreet he is about it. I've mentioned this concern several times in the past and almost every time I get a few more PMs or emails from LPSG-ers who tell me their personal experiences of having had that happen to them.
I've been super careful about what I reveal here. If I really messed up, though, and revealed too much information that a person I know IRL could identify me from and I realized it and felt worried about it, it makes sense to me to throw out some red herrings to throw anyone off the scent.