Catholic Match asks everyone's age and so does every other dating site. Are they impolite?
It also asks people their views on contraception and fornication. Its a dating site. Its going to ask questions that are considered no-gos in normal conversation in the real world.
If you don't beleive, go up to a random number of women of various ages in the Mall, heck even Church, and ask such questions, let's see the results you get.