Right, they value the state being "socially liberal" but the second they have to contribute (as a very fortunate person) then it's a bridge too far and they want to leave. Complaining about paying for public schools and teachers as a person who literally admits to paying for private tutition is unimaginably out of touch. I too hope it's satire but unfortunately people like this exist.
Yes, people tend to develop different opinions about taxes depending on their financial situation. Perhaps a decade ago this person would have written your comment word for word -- who knows what kind of comments you will be writing as your situation develops. Only time will tell. :)
I am the one stating it. I personally think that this is what happens to a lot of people. Perhaps your opinion about taxes will never change, no matter what -- but certainly some folks evolve their thinking once they get wealthy or as you yourself said act "socially liberal" only until the tithe box reaches them.