Expectations of relatives abroad can be hard to manage.
I'm not sure if this is the situation with your partner, but often the extended family will club together money to send one ambitious and skilled family member abroad with the expectation that they will earn well and repay the family's sacrifice through remittances, lifting them to a more secure position and then return a hero.
The reality is that many immigrants end up in immigration camps, working in the grey economy or in min wage work, sometimes in worse situations than they were back home but carrying the baggage of their family's hopes and dreams.
Their family's are heavily emotionally as well as financially invested in their relatives success, because often those who leave dont come back. They either die abroad, or increasingly struggle to send money back. So at an emotional level, the relatives are trying to keep their ties to him while also recouping their investment in case support ceases.
But stories about the riches to be made in Europe/US still drive families to pursue this, because history is written by the winners, and he doesnt want to look like a loser in the eyes of his family.
Its a weird clash of dreams and reality.
The families know that their relative is unlikely to become superrich, but there are advantages to sacrificing them; the immigrant knows that life in the West is not all roses, but needs to keep up the illusion for personal pride.