Investing isn't an exact science. A good story stock with solid fundamentals can sometimes have wild meteoric rises. The talent scouts who discovered Taylor Swift as a teenager probably couldn't foresee what she would become today. Scouts watching Aaron Judge hit at Fresno State probably did not forecast his ability to hit over 50 home runs and bat over .300 an entire season. Companies can far exceed even the rosiest of expectations because a. the stock market isn't static, and b. catalysts that propel a stock upward are not visible on a balance sheet.
Palantir has solid fundmantels. Although the upward volatility is similar, it isn't a "meme" stock in the same vein as Gamestop or AMC. Long-term investors should consider this an investment, not a trade.