Yeah unfortunately I wouldn’t be expecting any real progress towards a “freedom” OS that can just be installed on any phone in the way that people are wanting for a decade plus, if ever. OEMs don’t want people using someone else’s OS on their devices, so they’ll take steps to prevent anything these guys do from working. The only thing that would change this is laws mandating it, and that’s not really something that should even be considered - at least for a currently supported by the manufacturer phone.