You know who you sound like?
Corporate media and legacy finance bobbleheads that said the same thing about Bitcoin in it's darknet market infancy. You know Bitcoin grew out of darknet markets right? Pretty ironic stance.
Bitcoin coinjoin obfuscation is weak privacy, it doesn't hide anything even when done correctly. Monero uses strong encryption for amounts and recievers and you just hit send. You want to onboard the world and think everyone is going to know how to use coinjoins let alone use them correctly. It's a fantasy.
At least with credit cards you are only surveilled by a bank. With Bitcoin the whole world can see.
Tell Darknet Markets that are increasingly adopting Monero that it will never work. Ultimate skin in the game, their literal lives are on the line.