Gating on accessibility ignores so many rough edges people experience. Opportunity cost, activation energy, learning gradients, community. We should want for people to encounter fewer stumbling blocks. Life is already complicated enough.
Not everyone has the luxury of being able to spend 10,000 hours to manipulate a graphite tip on paper. Everyone has a human experience. Everyone lives a life of joy and pain. Everyone daydreams. And everyone can communicate feelings to others. Art is just one playful encoding of that. A specialized encoding with difficult runes that take time to learn.
Asking someone to stick to pen and brushes is like trying to keep reading as a priestly Church ceremony.
Making art should be as easy as playing a video game or telling a story to friends. It doesn't matter how you made it. It only matters how it made someone feel.
More than anything, I think the artist will be the biggest beneficiary of these tools. They'll be able to do more with a smaller budget and fewer people. They'll be able to learn and experiment faster, and take their work down entirely new paths that were previously blocked.
Webcomic and fanfiction authors will be film directors. Just give it time.