Lol you read it correctly. That's his argument but won't happen in real life.

First say inheritance problem then say mil still alive. Even if there's any Will, it won't be valid until mil died.
Then argued it's reverse inheritance problem because suspect mil didn't make will so her share on properties could be divided fairly among fil, her son and daughter. If that's the case ts should cukur because they should get a piece of pie over the bungalow as well if there's no will set.

Inb4 uncle=ts bodoh and greedy.

Never cukur mil paid 100k down payment for house that might worth more than one million now. Otherwise the useless husband might not be able to pay monthly rental for family house and the wife might have to work even harder.
Mil stay with son and plan to stick to son whom will take care of her, how is it not fair for the son to inherit the bungalow they are staying? Meanwhile your children didn't contributed anything, how dare they want some share over it?

Even the mil didn't lead the wife to buy the house, in the end you will still get nothing, her bungalow her will to give her son, none of your business.