Both arguments of yours are quite true, I also don't think that going beyond zoom level 20 or 21 is advisible within a raster tile stack (and I just checked that the UK map I mentioned earlier goes up to zoom 24 and not 28 as I stated, while the software stack (in this case mod_tile&renderd) is prepared for up to zoom 28).
I also don't intend to argue against a vector tile stack - both vector and raster have their use cases and pro's and con's.
Vector tiles bring much more flexibility but less support in some use cases, raster normally loads/displays much faster (if served pre-rendered) and has universal support on the client side.
I also don't intend to argue against a vector tile stack - both vector and raster have their use cases and pro's and con's. Vector tiles bring much more flexibility but less support in some use cases, raster normally loads/displays much faster (if served pre-rendered) and has universal support on the client side.