I think you lack context. This behavior goes back a long time (at least until 1998-99 when my wife and I did our backpacking trip around the world).

Not only are they mostly gungho and rude, they tend to take over entire hostels or hotels, and threaten anyone who asks them not to do karaoke at 3:00 in the morning.

Many nations have a "type" of traveler: Canadians consistency considered the best, Dutch too stingy, British atavistic, Aussies/Kiwis friendly and fun loving, etc. It's been like this for literally decades.

Same happens here in Brazil. Israeli tourists are usually entitled ex-military genociders, they get a lot of "compensations" after serving their days as Zionist Soldiers that many just take the money and travel around the world, where they more-often-than-not disrespect local laws, customs and people, and many establish themselves in Israeli colonies where they go back to their days of supremacists, for fear of mixing in with the local population. This is happening here in Brazil, and it is disgusting. I wish my government would fucking kick all Israelis reservists out of here, or pursue them for war crimes.

But it's not immigrants. It's tourists acting shitty as temporary visitors and that's very different than populist rhetoric blaming immigrants for taking jobs.

Not too dissimilar from when people take issue with US tourists (they're ranked as the worst tourists globally so far).

Or when people took issue with Chinese tourists not that long ago. You know what the Chinese government did? They educated their own population about having better manners when traveling!

https://www.thetimes.com/travel/destinations/asia-travel/china/chinese-told-how-to-be-good-tourists-cghdjjrvbbv