If we are to compare the money launder through cash and the money launder in Bitcoin, I'm sure that cash will win by a wide margin, so the idea of Bitcoin is used for money laundering is a misplaced discussion that is not necessary; also the opinion of people doesn't stop bitcoin from doing what it knows better. It will grow regardless of what you think, where you come from, and what societal position you hold. Instead of listening to what they say negatively about what Bitcoin is doing, you should rather don't give attention. If you want to buy Bitcoin or planning on how to buy, do and ignore the negative sentiments.