Hello!
As I understand it, users of computers-on-a-board (Raspberry Pi, etc.) are, more often than not, using Puppy or some other Linux version with VERY LOW system requirements that best match the limited resources available on those platforms. Sure, a Raspberry Pi is cool, but for even as little as what one of them costs, one can get older laptops with more capabilities, as I do.
Personally, I cannot vouch for what anyone on the LL development team would say about this, but since the primary focus of Linux Lite seems to be to accommodate users who are retiring Windows XP, I'd say that for the LL team to 'go off on a tangent' by duplicating the efforts of others who are already actively developing ARM versions of Linux would only divert manpower and resources from the primary objective, which is something that has led to the demise of a LOT of different Linux distros over the years...
73 DE N4RPS
Rob
