Aren't we being judgemental? What if the brother gives his Zakah, donates a lot in charity and cares for Muslims (worldwide)? Allah (SWT) has Masha’Allah blessed him with more wealth (still) so he is within his right to spend it on himself and the family. The most we can do is to encourage him to spend more but we can’t be judgmental and condescending about it, can we? Its permissable to wallop in luxury he isn't doing anything wrong, at all!