It's a detail. They are effectively an advisory body. They can recommend changes to legislation but the Commons can always overrule them.
If you're talking about the Crown estate, it is outside their control and the revenue has been at the disposal of Parliament since the reign of George III. Estimates of the private wealth of the Queen put her at about number 302 in the UK rich list. Hardly a gatekeeper of national wealth. Do you actually know anything at all about the UK's constitutional arrangements?
