You're misinterpreting what I'm saying. Of course, it's serious, but it's not something that's affecting most people. The complaints most people seem to have about the apps are that they're slow.
Not true. They were not temporary fixes for me and others. Haven't had any more issues since I fixed it in January.
Yes, you shouldn't have to fix this on your own, but it's not a perfect world. Either you go ahead and do what you can to fix it or yourself, and if it works, fantastic, or you return the watch.
I went through a number of things to fix the thing for myself and, ultimately, I was successful.
I see you say you removed the music and the apps, and put them back, and it was working until you reset the watch? Why not set the watch up as new, back up the phone, and set the phone up as new? Then sync everything back.
From everything I went through in my own experience, I can tell you that it seems like both devices end up playing hot potato with the bug. Solve the issue on one, and it's like the connection between the devices passes the bug back. It was not until I set both devices up as new that I ended up wiping it out.
Like I said, YMMV, it's a good thing it wasn't a temporary fix for you.
Sadly, it just doesn't work for me. Even if I set up my watch and phone as new (not restoring a backup!), it still doesn't work properly as soon as I'm putting back my music and reset my watch.
So yeah, I wish I can fix it on my own, but I definitely can't.