I was looking for drone controllers online when I found the Etlas Mobile II. When I found the manual on holybro and looked at the calibration screen, it looked exactly like on the Herelink:
Yes. It is a clone. Quite old and unsupported software in it.
It is the reason that you have to enter a Product ID code into the genuine Herelinks.
When your source of revenue is hardware sales, it does not make a viable business for Michael and Sid to spend thousands of hours writing the code in the Herelink only to have it installed in the clone units.