How did they do it on the initial updates then?
But whatever, ok, lets continue my dangerous thinking, shall we?
Lets not count with your 1.5 drawings a day. Lets count even lower at just 1 drawing a day, still should have been finished in 10 months max. with the 310 Art pieces.
And don´t forget as its very important: the devs claim they´re working "full time" on it. With "Full time" they should have clarified that it means working for 2 hours not every day but every second day - that´s their effective output.
Hehehe, come on man........, if you don´t have your judgement clouded, it´s pretty clear what´s happening here.
There´s no need to sugarcoat it.