All of you are partially correct.
And that's because NTR stories can't really be re-invented; it's like a car - it uses 4 wheels to drive, needs an engine, and an exhaust. The basics will always be the same.
SadPepper is just a victim of having completed more projects than most devs ever will begin in their lifetimes. Kudos for that.
However, some room for experimentation still exists in the finer details; something that Pineapple Express 2 is lacking in - this "fault" becomes more apparent here, as we are now not only seeing another NTR story play out, but this time with repeat characters as well.
All that means is, PE2 had bigger expectations: people wanted to see how their consequences mattered, but then PE2 released and the status of Peter & Julia's relationship got hit with an unwanted reset button that left a lot of heads scratching...
This was SadPepper's chance to go beyond his tropes and shore up some of his weaknesses - instead, the man shuts down his Patreon and decides to slow down for the foreseeable future.
Aaaaaalrighty then...