many altcoins have experienced this. but in my opinion this is not the case with Bitcoin. because Bitcoin is very consistent every year it experiences a high increase and bitcoin never falls in price or returns to its base price. ups and downs definitely occur in the exchange market but bitcoin has always survived and continues to improve every year. and this is felt by long-term Bitcoin holders
Yes, it is, because if Bitcoin can fall at its base price, then some Altcoins will find their end in the market, because the resilience of Altcoins during a correction will not be as great as Bitcoin's resistance when the market is corrected very deeply.