People over use that phrase, BTC was feared to be a bubble so many times but its been a decade already so that bubble was cast in iron it would seem not really matching those dynamics.  Volatility is always there however both in ability to rise and pullback as we've seen.    The OP is a bit out of line in his description of price action, we have not even neared the lows of the summer and this current pullback just amounts to profit taking to be expected any normal in occurrence.   
  I quoted your text especially as the signal to sell especially was the new ATH which failed to hold and after very positive news in the BTC ETF being made available.   If we cant continue in such bright sunny days, then expect a colder wind to blow in with this selling its not new we've done it before and my appraisal of this entire year is positive beyond any normal expectations.   This is the perfect score overall, even if we ended in the 40k area that'd still be my opinion BTC is extremely good health in terms of its market performance and hopefully continues to improve across all dynamics also.