Why you can't just screenshot an NFT

I like this video, but I feel you've taken your thesis statement 'without the certificate, the artwork has no value' (as said by the art historian from Sotherby's) out of context. I think in this context he was referring specifically to Sol LeWitt - who's work literally comes with a certificate (as shown in the video). Many (most?) works do not, or at least not one provided by the artist - the value 'is' the scarcity of the physical object (the actual painting, sculpture etc). Whilst I understand 'owning' a conceptual idea as an artwork (where traditional notions of scarcity don't apply), NFT's aren't really that... whilst the mechanism for buying/selling might be conceptual - the art they connect to is (generally) not. Is a 'Bored Ape' NFT really a conceptual piece? What about the drawing makes it conceptual? What is the actual 'idea' you're buying here?