Having one, I don't feel as good about the PinePower. I bought it together with their Pinecil soldering iron (which is great!) as it seemed like the ideal way to provide power to it, but unfortunately it's a very unreliable combo, with the iron rebooting frequently. Discussion around many similar issue reports online suggests the possibility of bad implementations of USB PD. Perhaps this is more a criticism of the complexities inherent in USB power supply in general, though.
Running the Pinecil off a Riden bench PSU with a simple DC power plug is rock solid, for comparison.
Which PinePower model are you using? In my experience, the Pinecil works flawlessly with the 65W PinePower and the recommended heat-resistant red silicone USB-C cable.
It's the "PinePower – 120W Desktop Power Supply – EU version" and I'm using that same recommended red cable on the PD65W port on the right side of the front plate.
Given the complexities of USB PD, it could also be on the side of the iron and then down to the version of IronOS. The other reporter mentions it works fine with other chargers, but that doesn't speak to correctness/compliance. I did not investigate much since my bench PSU is right below the PinePower on my workbench :)
I will say it generally works nicely with the little USB-C-equipped power delivery breakout boards I use in projects, or MCU boards I've tried. I also park my phone on it a lot. So I am getting use out of it.
Running the Pinecil off a Riden bench PSU with a simple DC power plug is rock solid, for comparison.