I only dislike these people if they blog about it. None of them are nearly as insightful as they think they are, and most of them aren’t self-aware enough to realize that this whole shtick hasn’t been “cool” since 2010.
> mistaking consumption for understanding and appetite for empathy.
This disparaging attitude towards tourists is in vogue among Europeans right now; there’s a group of anarchists in Barcelona that have spent the last year or two scrawling: “TOURISTS GO HOME, REFUGEES WELCOME” on the sides of buildings.
The theory goes that tourists are a net negative to cities because they cause neighborhoods to gentrify and displace those who intend to actually live within the city. The money coming in is a negative because it causes the city to deploy resources intended to cater to tourists, the tourists fundamentally change the character of the neighborhood by their very presence (the cannibalism you are alluding to), the tourists are rude, the tourists look funny, etc.
Disdain for tourists is just a socially-acceptable way for progressives to practice the xenophobia that is now in vogue among reactionaries. They can’t blame all of their problems on foreigners writ large like the reactionaries do, so they “punch up” at the only sort of foreigner that is likely to make a positive contribution to their country.