After Bitcoin became an additional source of income for Blackrock, the CEO will definitely not say anything bad about it, such as drug trade or financing organizations, but their purchase of Bitcoin and giving shares to investors is against decentralization, which is the basis of Bitcoin.
“I've developed a new open source P2P e-cash system called Bitcoin. It's completely decentralized, with no central server or trusted parties, because everything is based on crypto proof instead of trust.”
Satoshi Nakamoto Quotes
What Blackrock ETF does is different from what Satoshi wants and Larry Fink's opinion doesn't matter as long as they are doing something harmful.