The 'worldbuilding' of it is quite cool. Funny worm god (yaldabaoth), interesting 'secret twist'. Ties to more ancient religions (manichaeism).
Shame that one of the primary historical 'reasons' it exists is antisemitism. TLDR, is it was made as kinda of a way to say 'the old testament (jewish) god was a fake evil demiurge, and to worship him is to worship evil'. So, just a different way of wording 'jews actually worship satan'.