You can't reasonably disagree that BTC has no intrinsic value, but I do disagree with the way that Warren Buffet is presenting his statement.

His alternative to using BTC is using fiat money, which also has no intrinsic value.  So calling out Bitcoin specifically for having no intrinsic value is unnecessary.  He would have to clarify why exactly he believes that fiat money (the alternative) has any intrinsic value either.

He also doesn't understand that BTC is not just a method of transferring money - a cheque is a method of transferring fiat money, while BTC users are transferring an entirely different currency altogether.