How else would you do it though? Surely you don’t want a random Mac to push its cursor onto your iPad? Same with all the other handoff features. Maybe I’m missing something!
As far as I understand they didn’t bother having alternative linking mechanism, like asking permission to the ipad though some other app or though safari for instance.
If it’s the same as sidecar 2FA is also mandatory for it to work. It makes sense for the proverbial 80%, and leaves a sour taste for the rest.
There are many ways. The simplest I can think of is a 6 digit numeric code that you have to enter, once from device A to B and then from B to A. The OS can also ask you to authenticate with your fingerprint before linking.
https://www.logitech.com/en-us/product/options/page/flow-mul...