I always feel a bit disconnected from what other people feel when I read things like this.
Personally, this kind of data doesn’t bother me at all, and is the type of data I don’t mind them having at all, and is the type of analysis I expect them to do. Using the data they have about my direct interactions with them to predict how I interact with them in the future seems fine. As long as they aren’t charging me extra, why should I be upset that they can predict what I will do based on my predictable behavior?
Their job is to provide me a good service that makes me want to keep coming back and giving them my business. If they can use the information from my past interactions with them to provide a better service to me, that seems fine.
My daughter has ARFID, and for about a year McDonald’s chicken nuggets were one of the only safe foods she would eat, so I went quite a few times. I felt much more embarrassed and worried about the workers who saw me there all the time than the app knowing i was there all the time.
What is the actual concern with McDonalds having this data about you? That they will charge you more if they know you will come back anyway?