Yes, it’s currently archived. However there is discussion to replace it with tuneD and let tuneD provide a compatible dbus interface. You can read more about it in the Fedora change proposal.
You are correct this is a deficiency in the last release of power profiles daemon.
Not only an ongoing discussion, there was a merge request that was being reviewed that added amd-pstate-epp support as well. When the project got archived that merge request got discarded. If not for the fact that tuneD is supposed to eventually replace PPD it might have made sense to fork the project.
The really important part of power profiles daemon is that it specifically has a path to the ACPI platform profile which on the AMD Framework platform is backed by the amd-pmf driver. The changes made to ACPI platform profiles have a path from the kernel to the BIOS to Framework’s EC which allow changing APU coefficients. It’s important that two entities don’t fight over these coefficients because Framework has extra logic in the EC which allows taking into account things like a 65W power supply vs a 90W power supply and what the APU can actually do with more power.
If you try changing these yourself outside of the EC something is going to stomp on the other and you’ll get unexpected results.
I don’t have any specifics to share to this thread but yes; this is something that has been observed. Aggressive configurations in TLP to override runtime PM behavior in the kernel will cause problems for the system; particularly at suspend. All of the important drivers for the AMD Framework systems have correct default kernel policies in the upstream kernel.
I know that software like powertop advertises possible tunables marked as Bad for some things like runtime PM for things like I2C adapters, PCI bridges and PCIe data fabric endpoints, but in practice these don’t matter.
IMO if you still find something that can be configured by tools like powertop or TLP that does have a measurable positive impact it means that a kernel policy knob default should be discussed.
One other thing that’s really important for a good experience is that both GNOME and KDE natively integrate with it. If you install Fedora or Ubuntu it just works.