It's not completely bullshit but indeed the average altcoin project now has no future and just follows the trend of hype, for example, meme coins that take advantage of prices that go up once and then fall deeper and that's what's hard to speculate.
If it's an old project and it can stay at the top of Coinmarketcap then we can see their development and of course this speculation can be done on projects with their goals and products.