it's true that bitcoin is being used in many bad sectors but literally why would it stop. bitcoin is a kind of money and money can be spent/transfer anywhere in the world in exchange for some product or any service. bitcoin is also used by deep web and most probably for all kind of crimes. we can see the recent ransomewhere attack which also demanded Bitcoin from common users.
Everyone can use money for illegal activities no matter payment is digital money like bitcoin,ethereum or fiat money. So bitcoin doesnt have any "deeply" connection with deep web activities..