Looking at my dnsmasq statistics, only 16.3% of 10,776 queries in the last 24 hours have been answered by the cache. Another 21.7% never left the device, since

Looking at my dnsmasq statistics, only 16.3% of 10,776 queries in the last 24 hours have been answered by the cache. Another 21.7% never left the device, since they were in the block lists, but that still leaves 62.0% of queries to be returned by 1.1.1.1 and 1.0.0.1, which is my external DNS provider. Although this doesn’t count on-client caching, it still seems to back up your guess and my original comment.