I understand the sentiment but respectfully, I’m not going to do that.

We all make mistakes in our job from time to time or have a bad day. And in this case the only consequence is BRI, R had to sit in an economy plus seat instead of a first class seat for a 1 hour flight on an ERJ. If I was BRI, R, I would be mildly annoyed but not much beyond that.

If this was a Polaris flight or a longer domestic route then yes I would probably name / shame / complain.