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Maybe it is because in Coinbase's web interface when an exchange executes, in reality, there is no interaction at all with related blockchains. the onsite exchange is just happening on Coinbase's database, while withdrawals are the ones that are really being processed on the related blockchain.
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If an Ethereum wallet address was created using MetaMask
It doesn't appear so, at least during creation. (You can verify this by watching for network traffic during the creation process.)
can the IP address of the wallet's owner be logged or uncovered somehow?
By default Metamask uses Infura. When submitting transactions, traffic routed via Infura will ...
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Just to clear up the non-speculative parts of your question:
...there is no actual decentralized application that you can install and run,...
Of the listed wallets, MyCrypto and MyEtherWallet certainly have standalone, non-browser, non-browser-extension packages that you can download and run offline (air-gapped, if you wish), and which will generate you a ...
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Binance does not have deposit limits for cryptocurrency.
Unverified users have a 2 bitcoin per 24-hours withdrawal limit. So 2 Bitcoins worth of ETH, roughly 53.7 ETH at this time.
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Exchange wallets...
(Centralised) exchange wallets may or may not be wallets. They could simply be a database or spreadsheet acting as a ledger to record the balances of the users. When you deposit funds onto a CEX, you pay either into a communal wallet along with everyone else, or into a throwaway wallet that the exchange controls. You don't get a seed ...
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