If you have accustomed your self with exchanges, you will know that at the end of every post of IEO or listing, it will be written that investing in cryptocurrency is a risk. Everyone by now should know that it is a risk to invest in any project. Anytime you invest in a project, you are taking a risk.
I think that if people have free money, then now is a good opportunity to invest in new Altcoins. We are already seeing many coins rise.
Not all the new altcoins are always profitable, exchange listings are the most important when it comes to the profitability of new altcoins. Coins listed on good exchanges are given more priority by the investors and are also considered as premium coins, I have seen a lot of good projects having a bright future but they didn't perform very well in the market because they were listed on some shitty exchange, but when their listing on a bigger exchange was confirmed then they got a big boost of funds and gave many folds in return to the investors over their investment.