If you want to borrow money to be used as BItcoin investment capital, that's fine, but borrowing it using a credit card in my opinion is less precise and more risky. Indeed crypto trading is risky but that is because of unstable market conditions that cannot be avoided. While in the capital stock we can design it ourselves, if it is too risky we can avoid it and use other methods. Moreover, capital is something that is basic when you are going to invest, so if the capital alone is problematic I'm not sure the trade will go well later.
Indeed, using a credit card to trade has risks, just like we borrow money and every month we have to pay it along with the interest that has been set. For people who are experienced and can control mental stress I think this can help with capital, because for me if it is done professionally it will have a positive impact, but if we can't manage it, then this will actually make our minds heavy and ultimately Instead, success cannot be achieved, credit cards will be useful for productive purposes, and will destroy us when used for consumptive purposes
