Difficult to navigate and I'm really busy at work but...
This seems pretty awful on mobile.
I use mobile >99% of the time. Everything's big, less content fits in the page, there are no/fewer buttons for thread pages etc so it takes 3 taps when it used to take 1 to reach the page I want.
I know some of this is covered in the thread already, but no time to read all of it sadly. Suffice to say I hope this isn't the finished config for mobile. I'm not against change but this is a drastic change and on first impressions, not better
N.B. Samsung Galaxy S9, Android 10, Chrome, stock.