Paywalled so I can't read the article, but yeah, this is not some sneaky loophole. Unused annual leave is a liability to the employer, and you can't cash in leave without employer agreement.
So I'm gonna argue this is probably better for the government that has just made a bunch of people redundant and pushed that work onto remaining staff, than it is for the staff who deserve some time off but can't take it on account of all that extra work that needs doing.