Looks like there’s a rich person loophole if you have at least £88K in savings.

But under the current, post-Brexit immigration regime, she must earn more than £29,000 and have been working in a job paying that for at least six months in the UK before she can apply for a family visa that would allow her husband to move here, or have £88,500 in cash savings.

So basically it’s not that both need to be working, it’s that the current citizen (I.e. her) needs to have been working in the country for at least 6 months. Also the last line is your rich person loophole.