There are too few examples of old coins being reborn; discussing rebirth is not as interesting as time travel. In the last bull market, BTC and ETH have already surpassed their previous highs by a large margin, while BCH, LTC, and XRP are like dead fish. In a bull market, if the price increase can't even surpass BTC, it's better to just buy BTC.

On the surface, people might think there are trapped positions, making it difficult to rally. The fundamental reason is that most old coins lack any real fundamentals; they primarily tell stories. So rather than listening to old stories, it's better to listen to new ones.