I hear you. The poor support guys have nothing else to offer to software bugs. Apple really needs to put attention on fixing this instead of working on more silly emoji's. This notification issue is impacting 100's of thousands of their customers who has already complained for months. I've wasted several days of time over past 6 months screwing around with it over a few iOS upgrades. And yet, continued to be told to upgrade to the latest iOS -- nothing, except more emoji's and other "features" I'm not using....
... and don't get me started on the mysterious battery-drain issue I started having a while back and continue to have with no fix, a clean battery bill-of-health from Apple Support department, and only recommendation --- continue to upgrade, iOS's when they come out, reset/reload all Apps, blah, blah, blah.
My wife and I still have a Series-1 Watch we need to upgrade. But holding because I'm not sure I'm we're sticking with the Apple eco-system at this point because of issues like these. Break something that we rely upon that used to work and drag their feet on fixes.