I don't suppose it is that much about caring what Goldman Sachs, SEC, and others say about bitcoin. it is mostly about what they say can affect bitcoin price, in other words it is about speculation.
for example I assure you nobody in bitcoin world gives a flying fuck about what Jamie Dimon of JP Morgan says about bitcoin but bitcoin price dropped about 30% IIRC last year when he called bitcoin "fraud". in a way it has turned into a tradition among market players that whenever some FUD is spread about bitcoin, everyone panic sells. and the funny thing is they sell because they want to buy back more of it not because they think bitcoin is over!