Is the SEC not worried about market manipulation?
Manipulate bitcoin market is not cheap at all because you are trying to manipulate a market with $854,777,215,245 capitalization, so, even if you join with $1million, $10millions or $100millions, it will be not enough money to make a big difference in the prize.
A good example that we have of market manipulation is what Elon did with Dogecoins, and looks like SEC gives zero fucks about it. So, people don't have to worry about this.
I thought the same too, it's not easy to manipulate the Bitcoin market, Bitcoin has gone far above that right now, you can only manipulate a less saturated market like altcoins, infact to be honest the Acronym FUD fear uncertainty and despair and FOMO fear of missing out are mostly attributed to altcoins especially those new altcoins.
You would need to play around with very huge amount of Bitcoin across a high number of whales before any discussion about Bitcoin manipulation can be carried out.