>patriarchal and racial structures in society have historically suppressed artists who weren't white and male

This is plain false. Those non-white and non-male artists who have reached sophistication and virtuosity comparable to Mozart and Beethoven were and are still acclaimed. Don't try to shove a narrative where there isn't one.

Also, this doesn't add anything to the discussion about why audiences prefer dead (!) white (!!) male (!!!) composers like Mozart and Beethoven over the works of early experimental electronic composers. The answer is simply because most people don't like listening weird noise.