If you want to prove that it's not I suggest posting any proof on chain. It looks like AI to me as well. All the shapes are in the exact same spots and there's no variety in the brushstrokes.
Of course I'm not an authority over you and you don't need to do what I say, but without any concrete proof to the contrary any posts in OnChainArt will be muted.
RE: Art Fraud Case #83 - Caso de Fraude Artístico #83 - @modern-trojan