Do some developers leave bad reviews for apps written by other developers?

Not that it bothers me much, and not that I'm weeping about it, but it seems weird that there's always one or two "users" posting 1-star reviews that are almost a copy of each other, complaining about features I don't even advertise in the app.

I understand when users leave bad reviews because they didn't read the instructions or don't know how to change units of measurement in their watch settings, but I'm talking about complaints about features that have nothing to do with the app, almost like they've copy-pasted a complaint from another review.

I'm not mad, I swear :)

...just curious if you've had similar paranoia :)