I would argue that Satoshi was offering a hypothetical example of why it might make sense for different use cases to each have their own blockchain (DNS, currency, etc) rather than try to have a single blockchain that can be used for every possible purpose. He wasn't saying that
Bitcoin users ACTUALLY might get "tyrannical" against raising the block size, but instead that BitDNS users shouldn't be dependent on what Bitcoin users want since they're each likely have different needs. Or did you think Satoshi was also predicting that BitDNS users were going to actually "be completely liberal about adding any large data features"