The support matrix that can be found at https://circuitpython.readthedocs.io/en/latest/shared-bindings/support_matrix.html#support-matrix has some weird modules listed for PewPew M4 and uGame, and probably some other boards. It claims that PewPew M4 has the network module, for instance, even though it's explicitly disabled in the board.mk and probably not even supported on SAMD51. Same with _bleio.

As far as I can tell, it's generated with https://github.com/adafruit/circuitpython/blob/master/docs/shared_bindings_matrix.py — I will try to look into it.