If you are going for new coins, you really need to be very careful and do your research. Because of buying coins that are very cheap, many people have fallen victim to investing in the wrong coin that eventually crashed. Well, it is not bad to invest in a coin that is new because of the benefits that are attached to having a new project. But if you don't know how to determine if a new coin is reliable, there is no need to invest in it; it is better to invest in a coin that has been existing and doing well in the market. Always do your own research because there are so many shitcoins in the market.
XLM is not a new coin though it's survived in the market for years and have been existing since 2014, if some bought $1k worth of it as at 5 years ago or when it's lowest price was about $0.00146 in 2014 the person would made lots of profits currently now that the price is at $0.3 therefore it's not a bad coin to look into although anyone interested would need to be very patient. Although you've made a very good point cause it's unwise to invest on a coin without doing proper research on certain coin before investing on them, lots of coin out there are shitty and being hyped to lure ignorant people into investing on them.