Can the normalization of domestic help in middle-class households perpetuate class divisions?
Is it an issue to work as house helper? That is the kind of mentality which equalizes work to humiliation. It's a job like any other people are being paid for. Thankfully, it's a possibility for people to work, instead of being unemployed and without any chances of making an income from.
Class division will always exist. And the people who most propagate and highlight such differences are the high middle class individuals who were born in rich families and never worked for real, as they envy the ones who are wealthier than them, so they use the miserable ones as example of how unfair the work relationships are in the world.
However, they are never willing to share what they have in order to make things more balanced and fairer on their distorted vision. They want others to share, including middle class, but they will give nothing. Rather, they will try to milk money from the state somehow. The perfect example of that is the artistic class from third world countries who live on laws ran by the state which have as purpose to encourage local culture.