Most of the redditors will not even understand the complexity of your situation but I'll try my best, ask your brother what will happen if he decides to marry at the age of 36+ but there's no match? Like is he ready to die alone? Because I also used to think like that until all my friends got busy in their personal life and there's no one to talk, All of the girls I know are either married or in a committed relationship, I also asked some unmarried people who were in their late 30's almost everyone of them regrets, Money shouldn't be a much of issue unless he tries for a baby, beside that Indian women have very low expectations so even if you treat them decently they'll always stand with you, Real problem is his career plan and anger issue, is his anger issue really that bad or he is just exaggerating? And if marriage could really impact his career then I'll say convince your family not him.