It's because BTC was already showing signs of bearishness even before the launch of Bakkt. Moreover I think these days news have pretty less impact on the price of BTC. Most of the price elasticity of BTC is due to the big whales dumping and pumping. Moreover talking about Bakkt bitcoin futures they aren't really showing any significant volume or trade-ability. Nobody seems interested in them. Moreover some people argue that the Dump was due to the delaying of ETF decision made by SEC recently. So I think price just goes it ways around and people then try to find excuses for that.