It is enabled, but I’m pretty confident that for now, you need to add kernel parameters and configure your UEFI for it to replace acpi-cpufreq.
Kernel parameters to add: amd_pstate.enable=1 and amd_pstate.shared_mem=1 in some case
UEFI setting to enable: CPPC
See this post for source of info from last month [Testing Update] 2022-03-24 - Linux517, Nvidia, Palemoon (not) - #5 by stephane