All of the issues you cite are actually just a matter of choice by the designer of this map stylesheet (for lack of a better word). OSM rendering is extremely

All of the issues you cite are actually just a matter of choice by the designer of this map stylesheet (for lack of a better word). OSM rendering is extremely customizable. One can present city labels on zoom level 10 and above, or they could just start showing the city labels on zoom level 11. Each zoom level can have different parameters for the 2000+ map components. In a way it is overwhelming, but it's also fabulous!