The capitalist structure which remains intact in a Social Democracy will work with all it's ability to undermine the social safety nets in place because all it will see is an area ripe for exploitation which is not being exploited. What you're doing at this point is constantly balancing between the antagonisms of the working class and capitalist class. It is a step in the right direction, but if we can work toward removing the threat of exploitation from the system so as to not be under constant siege, then we should.
Right now in the Nordic countries and other social democracy leaning societies in Europe, we are seeing the capitalist class utilizing the influx of refugees (created by western imperialism) as an excuse to fuel rising racism and anti-immigrant sentiment against the champions of social democracy to de-legitimize them and tear down social safety structures when they get even the smallest piece of power to do so. This is also not to even bring up that western imperialism is a necessary factor in maintaining the economic climate that Social Democracies depend on. Ie: the exploitation may be lessened domestically, but is ignored or even emboldened globally, largely against the global south.