I want to recommend some advice here. First don't invest in new projects. Most of new projects are not for long term and you can be scammed here. Buy those token which listed in big exchanges like Binance, Coinbase,ftx and kucoin.
I am using Binance and very good so far.
Never buy coin in fomo. buy coin in dip and hold for some time. One day it will Pump and you will see in gainers.
I disagree with your statement, why can't invest in new projects, not all new projects are scams and also not sure old projects are safe. Luna is the old or new project and do you remember how it died? As long as you always do your own research before investing and are always willing to take risks, investing in new projects is good and has the opportunity to bring high returns.
He can say it because maybe he got a bad experience in new projects but for you, maybe you are well experienced and that is why you can say that.
For me, I can only say that every beginner should start in the basics or the easy one first and that will be in btc and then the first 2 or 3 top coins. They need to study well and if they already gained a lot of knowledge and experience, that is the time that they can try risky stuffs like investing in newly released coins or even not new coins but only coins that are not in the spot light because we never know, what is some of them has a potential to be a hidden gem which can bring us crazy returns.