Conversation so far:
What were the artistic styles of Jean-Michel Basquiat?
His paintings are typically covered with text and codes of all kinds: words, letters, numerals, pictograms, logos, map symbols, diagrams and more.
What were these styles of Jean-Michel Basquiat used on?
He would often draw on random objects and surfaces, including other people's property.
Were these Jean-Michel Basquiat works featured in museums?
By the 1980s, his neo-expressionist paintings were being exhibited in galleries and museums internationally. The Whitney Museum of American Art held a retrospective of his art in 1992.
How was Jean-Michel Basquiat's grafitti viewed bvy the public?

Question: Why didn't critics like them?
Self-contained rewrite: Why didn't critics like Jean-Michel Basquiat's grafitti?