Absolutely! Nuance is definitely needed. But I feel that the distinction of what is art is embedded within the question, and clearly defined terms help to provide a worthy answer.
Maybe we should start with "what is art" before asking about its meaning, or whether it is just a pretty picture, or indeed a block of colour ..
I don't know .. I'm just a pleb with an appreciation for anything from Vincent van Gogh to Jackson Pollock 🤙🏼