Why wait for a stable version?
Router TUF-AX4200, which is already in the stable branch, uses a completely similar platform and therefore the firmware for router TUF-AX6000 can be considered stable.
You can now flash stable OpenWRT v23.05.2 into your router TUF-AX6000 using these instructions: Asus TUF AX4200 support - #241 by remittor