In my opinion, it really depends on the crypto knowledge and financial literacy of the investor. If you don't know anything about the other coins claiming to be the next bitcoin, try to learn about them first before putting eggs in them. Personally, I don't have much time to learn about the other coins that are proliferating like mushrooms, so, I stick to BTC and ETH mostly.
Most of the altcoins claiming to be the next bitcoin are fraud. They will give good graphs/comparison table how they beat bitcoin. But guess what? Most of them ended up in those tables and not gaining any popularity from the market. They can promote their project as long as they want but gaining trust is another thing.