Most drivers with experience can tell by how a road is constructed (materials, bank angles on curves, etc.) roughly how fast they can safely go, and there’s a subconscious mental tug to get up to that speed. Whether you personally are impacted by that or not, it’s a well-known phenomena.
When everyone on the road, most far less thoughtful than yourself, are experiencing that mental tug, traffic moves naturally faster than the posted speed. And then that gives probable cause for our racist police to pick and choose who to fuck up.
In the scenario I described above, congrats, you now stick out like a sore thumb as traffic flows around you, and you need to hope or pray that everyone coming up behind you is alert. Police can pull you for causing a hazard, and plus you just radiate “I have something to hide” energy. Simply driving slower isn’t some magic solution when no one else joins you.