...Although having several exchange account is good to diversify your trading activity and minimize risk in case exchange bankruptcy.
As a rule, tokens are not listed on all exchanges, and this is the reason that I have several accounts on different exchanges. In addition, due to the difference in the price of a coin on different exchanges, you can engage in arbitrage trading and this provides an additional opportunity to make a profit by buying a coin on one exchange and selling it on another at a higher price. This does not happen often, but it is necessary to be always ready so as not to miss such an opportunity.
Arbitrage trading is another solid reason to use multiple exchanges. For instance, this happened to me last year when one of those TG airdrop listed, I had to start arbitrage trading when I realized the difference in the listing price across the two of the exchanges it was listed. And yes, opportunities like that don't appear often but we should be able to maximize it when it comes