I wouldn’t call myself the world expert on Sonix these days, haven’t messed with it in over a year. I occasionally check up on the Sonix hacking discord and it looks like some people over there are still making progress, have rebased to master and such. I have been focusing on OpenRGB itself mostly and once the Sinowealth boards started coming out I kinda lost interest in keeping up with SonixQMK since it felt like the work we were doing was getting undone.
I did try to JTAG a Sinowealth keyboard but thus far have been unsuccessful in talking to the chip. I would at least like to dump its firmware.