Yes a worthy post but possibly less so these days with full fibre.
It’s not so much your internet connection speed (assuming its 80mbps+ or whatever).
It’s the capacity of the servers your downloading the information from, if they are overloaded with 8 million people all doing a “first run/big update”, plus downloading game files, all on December 25th.
You could have the fastest internet connection in the world, but if Sony/xbox/switch servers, etc. are saturated to breaking point, your download will slow to a crawl, or even stop.