Earlier quoted context omitted.
It creeps me out when the clipboard is unexpectedly shared between my phone and computer. And since the feature seems to turn on randomly but not reliably when I want it to, I’d rather it just didn’t exist.
For me it’s one of the top benefits of the Apple ecosystem. The only drawback is that yes it only works most of the time. And when it doesn’t I get infuriated. Glitches happen without any change to settings or network on my side - it works now, and 5 min later doesn’t.
I use most of Apple's "built in" applications like Mail, Notes, Photos, etc. with Firefox (instead of Safari) probably the only exception to that.