Quote from: carlfebz2 on April 19, 2018, 08:24:19 PM

Its just a new way on sharing up your addresses

It's also a new way of introducing a man in the middle attack. You'll have to trust a third party not to change your addresses to their own. And trusting a third party doesn't do justice to Bitcoin's trustless design.

Quote from: TryNinja on April 20, 2018, 12:58:56 AM

Because usually you can't share your watch-only wallets with other people.

Giving the same addresses to different people is a terrible idea. Apart from reduced privacy caused by address reuse, you won't know for sure who sent you the payment.