Charge speeds have greatly improved across the entire range with 2019.20. Only some Model S & X have had charge speeds reduced with the recent updates (long thread about it).
But you’re right, it’s generally faster to not skip Superchargers unless they involve long diversions from the highway or traffic is heavy, adding time to the stops. It also depends on the distance between them... for example, they’re only a few miles apart along the I-95 corridor, but much farther apart out in the middle of the county like along I-90. It’s easy to skip multiple Superchargers along I-95 without any time penalty.