The Garden of Earthly Delights by Jheronimus Bosch

Like I say, this is opinion, but as in architecture, where there is definitely no good classical building happening today, there is no credible 'old master" painting happening now. Even the whole category of figurative art is in question in the same way that ornament in architecture is effectively dead. There are still people who can carve classical architectural ornament but as a creative tradition, it's over.

I'd reiterate that the division of labour and the role of the artist means there isn't really any access to the "old master" position any more. Being an artist since about 1900 has been about ego/charisma, a largely self-selected group rather than talents discovered in obscurity and then elevated to greatness by patrons. The art business is structurally similar to how it was, in the sense that it still runs on patronage and prestige, but there is some kind of crisis in the formation of artists. Probably part of a wider loss of cultural direction and the general fact that there is now too much to know about the world and everything (paintings, careers) feels rushed. You still see flashes of intriguing visual ideas, sensitivity to colour, new combinations of different forms of art, but I don't think anyone would claim that even the best of today's art can compete with that from before modernisation took hold. It's a state of disenchantment that we can't wish away by going back to the old techniques.