Of course its unprofessional, he's easily making over 5k a month. I understand that it must be hard to create games ( I don't know anything about that), but giving an estimated release and then pushing it back one,two, and even three weeks just to get his monthly check seems kinda harsh for the people who support and believe in him. And as for the Unity engine that you mentioned, no point in switching from Ren'py. DoD was Ren'py and it was one of the greatest games i've played, so why try to fix something that isn't broken.if u or any other think this dev is a liar or a non profesional dev, be my guest but u have no idea just how fucking wrong you are .
Anyone that come bitching here should be either new or hit in the brain to think he is bs his patreons or milking them....
(also take into note that fucking unity is a piece of garbage and sometimes it messes games if u are new in coding unity...)
p.s: no need for profanity buddy