As a Swede maybe I could add some first hand information.
I define myself as Conservative and Nationalist, so this may show in my answer.
It´s nothing fundamentally wrong with the Swedish wellfare system. The real problem is that it´s outdated. It origins from the so called “folkhemmet”, the Swedish post WW2 political doctrine.
It´s aim is reasonable equality between social classes, full employment and a fair amount of material standard. The true origin of this model nobody really want´s to speak about, because the basic idea derives from 1930´s German social politics.
The base for getting this model to work is however a total commitment and honesty from the people. To get that you must have a peoples feeling of belonging. The best word for that I find in the German “Volksgemeinshaft”.
So what has happend since this time? Globalization and secularization. Masses of immigrants have come to Sweden with their culture and habits. They make claims of Swedes altering their ways of life.
Along with this came the cultural marxists from the Frankfurt school, who wanted, and to a great extent succeeded in, turning all traditional values upside down. The Swedish people were robbed of their traditions, heritage and spiritual belonging. The Swedish Church became even more secularized and ruled by secular political powers.
Taking our traditional way of lifes place came a perverted form of politically correct liberalism with an egoistic, mass consuming culture governed by a therapephtic state.
Where does this lead? It results in a egoistic, rootless and cheating people living in a system built on trust.
The few honest people that really needs the help and the hard working backbone are paying the prize with the wolds highest taxes and nothing but accusations of racism and discrimination as feedback.
So either we restore our traditional way of life or we adapt to this evil epoque of modernism.