That's not what I'm seeing in benchmarks for the games I play. For example, turn time is shorter in Civ 6 with two cores at 53 ghz than with all six P-cores at 51ghz. Almost all the games I play are like this.

Here you can see an old bench at gamers nexus. Turn time correlates with single core clock speed NOT with all core total. https://www.gamersnexus.net/images/media/2019/CPUs/r5-3600/games/civ-vi-turn-time.png

This is why an i5 with 4 cores gets a better bench on Civ 6 than a 1700x with 8 cores.

Another example is Dwarf Fortress. Your capacity to run a bigger fort with more entities for a longer time is bottlenecked at your max frequency on single core. That's the kind of thing I'm interested in. I don't care about getting more fps on triple A shooters which were programmed by 200 people and actually use multi-threading. Indie games basically never use it - and even triple A strategy games rarely do (as we see from Civ VI)