One is that enthusiasts want their PCs to run as fast as possible, and any tuning that a motherboard manufacturer might do in a BIOS is fair game. The other take is that any auto-overclocking or beyond-spec tuning should be disclosed in the settings, and by default a board should run at stock.
With AMD’s AM4 X570 boards—and let’s be clear, this isn’t the first time this has happened, not even for socket AM4—the problem is that some motherboards are reporting an incorrect current (amps) value to the CPU. The CPU uses this value to determine voltage, power, and clock speed, seeking to stay within the specified limits. If the motherboard “lies” and says the current is lower, then the CPU will be able to exceed the normal power limits and potentially run faster.