Berlin is evidence that most tourists don’t actually care so much about history, culture, and museums, as it is not for most people a major tourist destination, despite having world-class offerings in each of those areas. Mostly tourists like large, visually spectacular sites, or family activities, combined with the feeling that they are taking in culture or seeing something important.
I come across way too many signaling examples to post them all, but I should at least post some of them.
If what Tyler said is signalling, everything is signalling.
The signaling in question here is not some analysis of what tourists like to do, but what Tyler's post is trying to signal about himself.