Yes, seems bt is working on P1.
It seems it uses a USB driver and not uart so works out of the box
For P1, can you check the wifi driver?
It seems it builds the 5.13.4 driver for 5.15/5.16 kernels but should change to the master branch which has a fix otherwise wifi authentication fails after you type a wifi password.
https://github.com/150balbes/build/blob/armbian-tv/lib/compilation-prepare.sh#L660-L661
I tried LE too(from your Yandex link) but it doesn't show a wifi connection on P1 even after adding this master RTL8723DU branch package, so must be something else, perhaps the kernel config file or something changed in LE?