what you say is not all true. because we can make investments in other trustworthy exchange markets such as Binance. so I think your conclusion is wrong. although now the altcoins listed on the Binance exchange have increased, that doesn't mean we shouldn't trade on other exchange markets. so my advice please go to other exchanges. because it's not just binance that's increasing. but there are other markets such as huobi, coinone, bittrex and others.
Every cryptocurrency that has increased in one exchange, the other exchanges will also experience an increase even though the ranking of each exchange is different, but for all major exchanges, I think the price of each cryptocurrency will not be much different and it is clear that every trader must look at it multiple exchanges and not just one.