No one knows if they would still be existing after several years. You can compare these projects to the old ones that once became popular and then no longer popular in the current time.
Time is a powerful indicator for one project. If one project is able to enjoy a cycle of four year in crypto, survives and has good communities, volume on exchanges, it can be a good project. Although that project can be a good one, it does not equal to better than bitcoin. If any team try to seed their project is better than bitcoin, it is their advertisement and self assessment, that is unreliable. I enjoyed the market in 2018 and I saw many shit altcoins have prices higher than $50, $100 for nonsense. They are dead now or months ago.
Reaching a new all-time high does not mean an altcoin will be successful. Most altcoins out there are not better than Bitcoin. That's their weakness. Bitcoin has the best proposal between all the coins I know. That's why it has received so much interest from institutions and not the other altcoins.
Bitcoin has its real adoption, usecases and a healthy network by its very high hashrates. With altcoins, less adoption, less or zero usecases and their networks are unhealthy, vulnerable to attacks.