Bitcoin is not illegal in the USA.  This means it is accepted.  Even the US government has made money selling bitcoins... how does this mean it is not accepted???  Please clarify yourself because your first statement seems to be very wrong indeed.

Second.  Warren buffet is invested in traditional investments that have made him who he is today.  If bitcoin raises this would hurt his investments by pulling money out of traditional fiat investment into crypto.  Of course he would not support it at this time because he is entrenched in the old generation that made loads of money and wants that to continue so that they don't have to learn something new.

Secretly though I doubt Warren Buffet is that ignorant to skip out on an invest that has yielded more gains than any other investment throughout recorded history.  I bet his is investing just like JP Morgan, the US Government and all the others.

Don't believe the news.  Believe common sense, and invest in Bitcoin.