From what I understand art world folks very well know who Banksy is, but I don't think such is the case for the tech world and Satoshi.

Hardly just the art world. That he’s Robert Del Naja (aka 3D from Massive Attack) has been semi-public knowledge for a long time.

I love there's no reference of that in his wikipedia article directly, but it appears 3 times in the referenced source titles:

https://en.wikipedia.org//wiki/Robert_Del_Naja

Out of curiosity, why do you believe it's not Robin Gunningham?

That seems to be what https://en.wikipedia.org/wiki/Banksy suggests, and the reasoning seems sound.

Proof? Please

Banksy is represented by the world's top gallerists. You think they don't know who they're doing business with?

Why would they care?

They just have to meet with Banksy's agent.

Knowing who Banksy is puts them at real risk of demystifying him/them and lowering their profit.

Yes.

Banksy is purportedly Robin Cunningham. Google is the greatest OSINT tool ever created.

that's just one theory. everything i've read lists both del naja and gunningham as possibilities at the least, and often tosses a couple of other names into the mix.

..and some others making fakes (that's why they ad it)

Anyone who has access to to passenger rosters of flights going in and out of Britain can figure out who he is pretty easily.

its only entertainment that Banksy is anonymous, the fact you haven't looked this up bolsters the point

personas are good enough information, it satisfies the curiosity well enough to not dig deeper