Technically true, but the combination of a generous welfare system and powerful unions means that there is a de facto minimum wage.
No one is going to work for much less than they'll get from unemployment, and just try starting a company paying less than the union collective bargaining rates and see how long it takes before a bunch of thugs harass you out of business.
The unemployment rate is a lot higher amongst MENA immigrants and their children than amongst the natives. This is a general finding and not in any way unique to Sweden. What is close to unique is the sheer number of low-skilled immigrants relative to the native population.
Sweden has a quite high unemloyment, especially for young people, and Sweden has no minimum wage.