It's interesting because they clearly believe they have workable actuarial data to support this, so in many ways good on them for using the data that's available. On the other hand, based on the examples given, it seems this is going to penalise people using language incorrectly - which I would assume can be strongly correlated with poor education. So on that basis, they're going to be saying that poor people are wor…
In that sense, it seems as okay as charging poor people a higher interest rate, which seems fine to me.