I don't know if it fully qualifies as financial abuse, because I don't know exactly where the lines are.
Regardless though, why would he be happy letting his wife feel this way for so long (it's obviously not a few months)? What's wrong with her having the last word on a holiday??! If she was suddenly paid more than him, would he think it right that by his own logic he would relinquish his authority and she would get the last word?
Totally agree that he needs to cost out the work she does - all of it - in the home. If not, she should hand him a bill. If he refuses to pay, she then refuses to continue the household duties (and to hell with worrying about the cashmere jumpers - charge him for replacement, he won't shrink a second!).
I do wonder too what he thinks about people who do voluntary work in difficult situations to benefit their and others' communities. Are their voices worth less than his because he's paid to sit at a desk punching words out?
I hope she writes a column too - and is paid more than him for it!