Wow, what a shitty dad. While helping people is nice and all, doing so at the cost of your family is just shitty.
The MC lost his dad, his house, and now his dignity. He has to bow his head to a group of strangers whom his dad seems to favor more than his own son. Talk about humiliation! It is a little like if his dad took a loan to buy a house for his mistress and left his son to pay for it. This is just ridiculous.
I think there will be an explanation for this later, but for now I just feel disgusted with this behaviour. I am not sure if even the explanation would help.