[hnthrowaway2]

It is charitable to call it childish. It is unprofessional. And it indicates a culture of "the rules don't apply to us because we are so cool".

[Tenoke]

Again, the reasoning behind it is likely for convincing investors/users they are in the right and as far as I can tell it is working - I see a lot of tweets of people buying Coinbase's response and raging against the SEC and people like balajis retweeting them.