Oh gee, that's really a lot of fallacies.
Yes, people used the bank called MtGox in order to bet on the future of bitcoin, just as they use other banks in order to buy stocks of companies in order to bet on their future, often without having a clearly formed view on what the company will be doing in the future, and more often than not with the hope that some particular company will disrupt how a certain business is being done, sometimes even some financial business. That's what we generally call financial capitalism. Just because you are betting on some not fully determined future does not make it a tulip bulb bubble.
Also, "independence from regulation" is not about "not paying taxes" or "not helping other people" or whatever your preconceptions might be, it is about achieving the same things that regulation is supposed to achieve, just without regulation. One major purpose of regulation is to make sure that a bank that you put your money in does not do overly risky things with your money so that you can be sure your money is still there when you need it. The value proposition of bitcoin is that the nature of the technology prevents the abuses in the first place, so there is no bank that could possibly do risky things with your money, so there is no need for regulation in order to keep it safe. Bitcoin proponents are not necessarily "against regulation", but rather "for a better alternative to regulation where there is one". Hence, it's not inconsistent at all, let alone hypocritical, that they expect to make use of the advantages of regulation where it is needed - such as the MtGox bank, which is not bitcoin, and thus does not provide the technical protection promoted by bitcoin proponents, and has to rely on regulation instead.
By the way, are you possibly confusing regulatory protection from bank failure with some kind of protection against a failed investment? If at all, this is about recovering the balances people held with the MtGox bank, not about reimbursing them for money they lost because they invested in bitcoin - it's just like when any other bank fails, really: If you buy IBM shares through your bank, you might expect that the financial industry as a whole would make sure that those shares really are there and you can transfer your shares to a different bank when your bank fails, even if those happen to be shares of a competing bank - but if IBM went bust, you obviously would not expect to be able to recover the money you paid for the shares from anyone, that's your investment risk.
And no, just because you promote some way of doing something does not make it hypocritical when you don't actually do it. Just look up the definition, it just isn't. Hypocrisy is when you claim to be doing something which you actually are not. Plus, there isn't even any inconsistency - when you bet on a technology that would make regulation unnecessary in the future, why should that mean that you should not make use of regulation where it actually is necessary?