How can bad art change to good art? Their artistic standard is surely the same as when they were painted, only their monetary value has changed.
he killedhimself in the late 1800s.
the world of painting was going through a type of upheaval.
there were using different paints than before, and from the mid to late 1870s
there were others like vangogh who were painting quite differently than "the etablishment"
pointalism, impressionism, fauvism, expressionism ( german ), and a whole group of other styles
emerged and the art establishment and gallery owners and people commissioning artwork didn't really know what to think
when they saw his work.
after his death in around 1900 to maybe 1910 there were shows mounted in paris, and amsterdam and other places
where his work hung with other modern painters, and his work at that point was seen in a different light.
it took 10-15 years after his death for the world to accept what he did and accept it as "GOOD".
when he was painting, from what i remember, he traded his brother a few paintings for $$ and his brother reluctantly paid him.
i wouldn't say he wasn't producing art, but "the establishment" didn't accept it as " good art "
good or bad they are just opinions. you can find the thread from a few months ago here on apug where cindy sherman's photograph
was the subject. some people like her work and believe she is producing, or produced "good" art, others were vocal and thought the opposite.
in the end, it is just commerce ... the right people see it, say " its good" and people exchange money for art, and it becomes an investment.