@drmoeder I can't speak for Onion as I don't work for them. The reason Warp Core was developed was due to reliability and performance issues with the standard OpenWrt Mediatek driver and it has served its purpose well. As times passed some companies made significant investments into improving the Mediatek driver to the point that Warp Core is no longer needed. I think many of us have switched to the standard Mediatek driver for various reasons, one important reason for me is that I want to disable the AP but still use the STA, Warp Core can't do that, the Mediatek driver can.
I'm using OpenWrt 22 these days and the Mediatek driver.