So what he means here is that he still don't think you should engage in Bitcoin but he supports people's rights to do so. That's a typical business man quotes.
But really we don't need him to defend our rights in any way infact banks getting involved in crypto-currency may leave a dent in the anonymity, privacy and decentralized nature of Crypto-currency.
And even if that was the only way to buy Bitcoin I won't definitely patronize JP Morgan because chances of things going wrong a high because their CEO still has resentment against Bitcoin. Everyone has to be careful out there.