FYI, also see that @rauli2780 has started his own discussions forum about this specific project in his GitHub repository for it to collect community feedback and input in the public (which I think is great for full transparency), see:
By the way, also check out this related general thread that discusses overall ideas about all these projects with drop-in replacement PCBs for different Google Home and Google Nest speakers that should be based on the generic Home Assistant Preview Edition circuit board design combining ESP32 chips with XMOS DSP and made for running ESPHome: