There's no disagreement that 13.0.0 was a bit of a low point in iOS release quality.
The question is: what is Apple going to do about it? It was apparently too late in the development cycle to roll the changes back and ship the iPhones 11 with a special build of iOS 12. (One possible reason: the significant changes to the camera app.)
The harm was already done.
So instead, they removed a number of non-essential features from 13.0 to reduce the risk. Now, having shipped 13.0, they've started rolling out fixes. I think doing so twice a week is a bit much (once a week seems like plenty), but I'm also not sure that's much of a problem. Either way, a few weeks from now, iOS 13.x will probably be just fine.