The quality of this game cannot be understated. The level of depth of the choice paths is more complex then the Vdate games. If you took several shotgun shells full of Spider-Man's web formula and loaded them into a double-barrel, then blasted both barrels simultaneously at a wall four or five times? That is the kind of branching depth we're talking about. PLUS he weaves new content in among the old content, and I can't remember the last time I came across a game breaking bug.
Is production taking a long time? Absolutely, and if you've ever gotten a chance to peruse his Patreon post of what his typical programming is like, you will understand that it's for a god damn good reason.