Not really compared to some other boards as its been pretty plain sailing with what was available a Rockchip BSP image.
The Debug Party is what it is and its going to scrutinise and exchange solutions and opinion, all your seeing is a fresh SoC with a Board Support Package and things are looking good.
The community and party have quite a range of neural diversity but is no reflection on the board.
1-3 months might be optimistic for a complete mainline but maybe someone might backport and hack out the current BPS, but it can often be a lotto of getting submissions in a kernel release to how fast things proceed. The Collabora folks might still be doing some final tidy-up with the m2 but hopefully the RK3588 will start getting some attention, but for me things are looking extremely good.
I don’t even think there is a PD problem with the board its just some of the cheaper PD models are a little more lose with the standard but as said DC 9 - 24v in with just a USB-C adapter fixes that.
Radxa are just looking at doing negotiation via uboot to encompass all even the cheaper PD models on the market, but so far there is nothing that ends in a cul-de-sac.