If there is ever a run at any of the exchanges, you could get trapped. This is why you should mostly have possession of actual coins and they should be located in a wallet that you possess. I would only keep enough money on any exchange to cover any trades or cash in and out that you plan to do near term.
It’s simple. Since you now have a choice, do you choose to support a coin or token that has endless supply, or one that is strictly limited in supply?
The economic statistics are so broken and so inaccurate that to call them fake is actually flattery!