The Brume 2 has the kmod-mt76x2u package available for the MediaTek MT7612U, but not the package for the T2U Plus V1.
The Brume 2 seems to detect the MediaTek MT7612U that lsusb in SSH shows. However, there is no Wireless page in the GL.iNet UI Admin Portal and the LuCI UI does not show the wfi adapter. There may some “magic” steps required that I do not know.
I do not work for and I do not have formal association with GL.iNet