The reality still is, as has been stated multiple times in this thread by those of us who aren’t just losing their **** without any real evidence, that this could be software, firmware or hardware or be a carrier issue, especially given the variety of experiences and the test results from various publications that are at variance with what some posters in this thread are seeing. No-one outside Apple knows, certainly no-one here does. Plus this is likely to be an order of magnitude more complicated than a bug in the gyroscope software, so that really isn’t a meaningful comparison.
We just need to wait and see what comes in the way of updates in the next couple of weeks or, if we really don’t want to chance it, return the phone before the 14d window is up. It really is that simple.