Yeah he shouldn’t be wasting money on outsiders (friends and extended family), but it sounds like it isnt a 50-50 split of expensives between husband and wife–he basically uses his money to pay for all bills, spends his money on his wife to give her a lavish lifestyle, trips and vacations and doesn’t let her spend her money. If you want to keep count, it sounds like he’s easily spent over $15,000 on her. He’s essentially asking for a loan from her and the girls are saying you don’t have to give it to him. Of course she doesn’t have to, but it’s extremely selfish. He seems like the type of decent guy who wouldn’t say a word and would happily offer to give his own money to help the girls parents out if that time ever came. Can’t just keep taking and taking and when the time comes to give then act all selfish about it and say that’s not my responsibility.
Since you girls like to keep count, why dont you suggest that OP stop using his money and start spending her own money on the lifestyle, vacations and expensive then yes she doesn’t have to spend anything on the guys parents, she’ll have no responsibility to guys family.