It's inherently classist. Only those with access to moderately high levels of technology can spend or receive it. Only those with access to exceedingly high levels of technology can "mine" it. Heterosexual, middle class or higher white males are disproportionally represented in the demographics of bitcoin users. Bitcoin only serves to uphold the current kyriarchal socioeconomic structures by making sure the privileged become more privileged.

And it's a terrible idea. You spend more on your parents' electricity bill and replacing burnt out GPUs that your parents buy for christmas and birthdays than you actually theoretically make.

Bitcoins are basically just this weird attempt by lolbertarian children to make their own currency and play stock market and dodge taxes.