But isn't Lord English omnipotent?

First Guardians are also described as Omnipotent, but even First Guardian and even English’ Powers have their limit. English IS the closest thing to an Omnipotent God, though- Eternal, causing the greatest amount of destruction, influencing the events in the story- But even then he lacks true Omnipotence. He can do a lot, but he cannot do EVERYTHING. Fitting for a Yaldabaoth-like Figure, he may be seen as ‘Omnipotent’, but in the end he’s just a False, Cruel God.