I suspect not. I have an objection and I'm not sure how to formulate it here, although you might be able to convince me I'm wrong if I can understand your reasoning. Just respond to this or a question like it (I think you'll understand my objection): "You do know this isn't a story about Zeus, right?"
I believe I understand, so I'll try to explain: I used Zeus and Poseidon as examples because people are familiar with them while also frequently misinterpreting them (in regards to how they'd had been viewed in their proper time-frame) as what are essentially powerful mortals. It is this perception that is part of what leads to the aforementioned misplaced attitudes. The misunderstanding itself is then not exclusive to the way the Greeks are viewed but is how the non-Christian older faiths are interpreted in general, which is why I'm referencing Zeus despite the Moon Lord not being intended as a Zeus surrogate (there's an argument to be made for there being a sufficient number of similarities, but it's not important here) - it's a general problem, not a specific one.
Now the exact way in which this perception clashes with all these different cultures varies, but that would require going into much, much greater detail and isn't essential to the overall point, though it would be a relevant nuance if the portrayal itself was accurate but happened to be of the wrong culture, but that's not the case.