OpenPLi (OE + Enigma) != DMM (or VU+, or...). This means that in order to remain compatible with the closed source drivers of these manufacturers, we need to be able to see their source code, so we can reverse engineer and adapt our image for these drivers through the box' BSP layer.
Because DMM has decided no longer to support open source, and has gone closed source for their own image, this is no longer possible. OpenPLi therefore HAD NO CHOICE but to drop support for DMM hardware. You can not compare OpenPLi with DMM clone images (like the gemini's of old).
If DMM wants OpenPLi to support their hardware, we need that access, or alternatively that DMM maintains the BSP themselfs (like VU and Xtrend also do). We don't have a problem with that, by all means, have them contact us with their proposal.
Currently in use: VU+ Duo 4K (2xFBC S2), VU+ Solo 4K (1xFBC S2), uClan Usytm 4K Ultimate (S2+T2), Octagon SF8008 (S2+T2), Zgemma H9.2H (S2+T2)
Due to my bad health, I will not be very active at times and may be slow to respond. I will not read the forum or PM on a regular basis.
Many answers to your question can be found in our new and improved wiki.