She's def boss in the house - most Dutch women are.
But she knows she will not and can not overshadow him 'in the workplace'. He, after all, is End Boss (yes I know it is ceremonial but for someone who said he isn't a sucker for protocol (literally he said 'a protocol fetishist') he's quite a sucker for protocol. She will always 'walk behind him' and her work for e.g. the UN is supportive of his work/role. She is a jewel in his crown, and a powerful, independent force to be reckoned with - I guess they're very Dutch in that way (other Dutchies correct me if I'm wrong in this opinion).
They understand the business side of a marriage (in that way they are very 16/17th century Golden Age Netherlanders) - both work for the same firm and can only shine when they do not try to steal the other one's limelight.
Max does her engagements and her UN/microfinance stuff (she is actually very professional in that area and what I've seen in a documentary about that work she is a savvy and educated and professional worker, and she's clever enough to surround herself with top-notch professionals to support her work)
Wax does the King-ing (ceremonial mostly, and some signing of laws etc), his engagements and flies the occasional airplane (his mom made sure all of her sons got a (university) education and a day job) and together they are the nation's mom and dad, brother and sister, uncle and aunt, courageous son and daughter.
They get an AWFUL lot of cash for that, and a lot of holidays, and a lot of privacy (the press censors itself, so the daughters can live a private life with sports and regular school (I have a friend in Wassenaar and her son had swimming lessons in the same pool as Amalia during the same hours, nothing 'private for the princess' there, ppl just know they should leave them alone), and a huge mansion, and whatnot, but they play their roles with such enthusiams and charisma that we're fine with that.
Apparently the state pays the DuRF money for the upkeep of furniture and other stuff in the royal residencies (not Eikenhorst or Drakesteyn but possibly in Huis ten Bosch and def in the other palaces) even though this furniture was sold to the state decades ago. The DuRF can privately sell stuff that is documented as state gifts/state property (Christina did this but the DRF as a whole did this too). THere are plenty of incidents like this that are uncouth or
and they do get reported in the press extensively and our PM Mark Rutte has to answer for it (which is reeeeeally awkward), YET there still isn't a large public outcry let alone a growing republican movement.
This family really knows how to work PR in their favour.