Why customer surveys are a bit rubbish

I just went to Brussels by Eurostar on a Standard Premium (sic, a bit of both I'd say) service.  The Standard Premium food was very Standard as one has come to expect.  However, it was served with a Premium amount of single use plastic.  I mentioned the latter to the server who reacted as if no-one had ever mentioned this before when I probably expected a nod of agreement and a rolling of the eyes.

Shortly after the trip every passenger receives an email titled "Tell Us About Your Trip".  The email was from "no reply" which is something equivalent to "if I want your opinion I will give it to you".  

So I waited until I had a signal and clicked on the survey.  I was very keen to tell them to use compostable packaging and to come up with a better solution for mobile data.