A recent example is Solana. Their network keeps crashing [0]. Everyone keeping their own keys are completely locked away from trading their coin. Everyone with their coin owned in a centralized exchange can trade freely.
If you hold your own coins, you're vulnerable to network attacks and AMM instability/hacks.
If you put the coins on an exchange, you're vulnerable to the exchange's liquidity issues.
Yes, if you use Solana you should be aware that the chain very regularly has serious downtime. Ethereum gas fees can spike but generally there has never been downtime.
A recent example is Solana. Their network keeps crashing [0]. Everyone keeping their own keys are completely locked away from trading their coin. Everyone with their coin owned in a centralized exchange can trade freely.
If you hold your own coins, you're vulnerable to network attacks and AMM instability/hacks.
If you put the coins on an exchange, you're vulnerable to the exchange's liquidity issues.
[0] - https://status.solana.com/uptime