The problem is that those statistics are doing something sensible. There are uncomfortable statistics related to immigrants, and your point #4, the thing about integration not being properly done creating parallel societies is a real problem that can and should be addressed properly.
But that's not what the person I replied to was doing - "all linked to people that were openly accepted through its refugee programs"
No, the study says that a foreign-born person is "2.5x" more likely to be a "crime suspect". That can mean a lot of things (e.g.: how many of them were actually convicted). Also, they are minority. Presuming all of them are convicted, it's still a minority that has about double the odds of being criminals. The logical consequence is that a lot of Swedish people are criminals if there's an explosion of gang violence.
Maybe the problem is the Swedish approach to guns? I live in a country that has a shitton of immigrants and is not seeing this surge of gun violence.
You see, we can discuss this properly without engaging in ethnonationalist bullshit.