Everything that suddenly pumped significantly in a short time is a bubble, including bitcoin when it reached $20,000 and then pops up to $11,000. Look at the current price at $10K, barely can't pass the $12K wall. Hence, it's better if bitcoin price increases slowly but steady. But, it won't be achieved without usability appeal of bitcoin, as soon as core developers and miners agreed to implement another scale solution such as the lightning network or Schnorr signatures, hopefully, the transaction fees will be decline and no longer takes a long time to be confirmed.