Well, under the new system, essentially it only matters that you OWN the books themselves. How you get them, is entirely up to you.
Because let's face it, Takaya does not make money on each issue. Nor does he get paid by the sotres who buy the books. He gets money from Kadokawa under whatever contract he has.
It's essentially like making digital copies of DVDs that you own. You are free to do that all you want, so long as you don't distribute them publically. What we are doing is "Sharing translations with other like owners who legally own the material" instead of normal scanlations. The shared translations just happen to be in scanlated format. If some copyright lawyer/supercop/robocop came by your house and was asking if you owned that material, all you'd have to do is hold up the book and say " Yep."