I use it for example for detecting the right positioning of photoelectric sensors at work. It was a great and convenient tool past then. And if you buy a 1000€ phone, you could expect all features to work and not get disabled because you maybe potentionally "could" see some undies. If I knew that, I'd rather go with a Mi 10 Pro.
Of course you want everything to work and it annoys me too. But I wouldn't buy this phone specifically for a lens.. sorry but i wouldn't, and I'd hazard I guess neither will you from now on.
If you have a DSLR, grab a photocrom lens for it. It'll be substantially cheaper. Could get a thermal, night imaging and scope lenses for the remaining £880.
Or if you're on xXx or RICE or both like me then just dial *#808# and you can turn the camera on for that lens and use screen grab to take shots. It's no different to the actual lens.
Until the charge gets revoked in afraid we're all on the same boat.