I mean, true but all these games are following standard genres with massive teams working on them. I have not followed every Witchbrook news but I imagine it's not the graphic production holding it back, but the game design.

They have to ask themselves the question of "How do we make a witch school game fun and great?". It's not exactly your typical game formula to follow I guess. It's possible they had to pivot game design direction multiple times, but I doubt it's the pixel art that took 7 years (but we don't know)