what is art 1

There were of course "artists" long before Kant but not in our sense. Not until Kant & is followers ART was constructed as a field independant of technique but also forming a group of ART techniques. Reynolds did not write about ART but about painting like Poussin e g. When ART was constructed it was given an identity of a certain (spiritual) aesthetics.
If you are looking for ART before this, how could you recognize it?

This was an interesting video & I loved the hedgehog but I'm not sure about the history. Joshua Reynolds' "Discourses" doesn't talk about art that way & neither did Leonardo. Certainly artists made work past the "Kant Deadline" without having ever heard of Kant--is that deadline their only validation? I think the error here is that you are taking aesthetics (and therefore philosophy and science) as a dictation of reality, rather than as an explanation. What are your thoughts on this?

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