Most people don’t drive luxury vehicles either. Can we use that data point to conclude that most people have a “revealed preference” for not driving very nice cars?

Of course not. Calling that a “revealed preference” is an abuse of terminology. A revealed preference means both options were equally easy to choose. Ad companies know people don’t like ads which is why they make it difficult to avoid them. In fact if people liked ads then injecting more ads into content should increase user retention.