I didn't understand this before, and the tuition I paid could have covered several hotpot meals.
This lesson's topic: upgradeable contracts
Common proxy patterns include transparent proxies and UUPS (EIP-1822). The main difference is whether the upgrade functionality is written into the proxy contract or the logic contract.
Before depositing funds, check the block explorer to see whether the contract is a proxy, which address is authorized to upgrade it, and whether there's a timelock.
The coin mentioned above: $ETH is quoted at 2286.61, 24h +0.81%.