I only peripherally understand, but apparently a while back someone started incorporating his android/mobile compatible mods into their stuff and charging for the result, something he's adamantly against (the charging part more than anything), so until he figures out how to make that at least harder, he's not making versions that work with Android ports (or joiplay).
Kinda like those free sites that tell you if you ever pay for something that was theirs first, you're being scammed, Sancho doesn't want anyone paying money for anything he makes.
I've read enough of his posts to understand the modding is a labor of love for him, and he doesn't even play the games until he finished the mods he himself makes (no idea how that works), so when others try to sell his stuff, it's frustrating to no end for him.