I think people keep asking these questions all the time. In my opinion, cryptocurrencies are not a complete bubble. Same goes for bitcoin, too. No one cant tell how long it lasts but i think crypto is still a rising thing of our lives so i dont think that its gonna end.
yes I am supporting this opinion 2 because it seems like bitcoin is just getting popular ready and not losing it, so none of the bubbles can last 10 years.