Nothing is stopping you from making a community and then banning people until it is sufficiently echo-chambered for you. ML or Hexbear might even welcome you. I personally know several expats living in Sweden. I’m pretty aware of both sides of the discussion. From the outside, it comes off mostly tone-deaf, but with some real points around failing to integrate immigrants. There’s also a significant amount of FUD and interference trolling, riling people up. For people living in Sweden, it’s a hotbed of controversy as the places you consider safe are changing around you. Would anti-immigraition accepted in open arms in lemmy general social forums? Absolutely not. But if you want your own echo chamber, there are places that would allow it.