It is not a moderate requirement, don't speak nonsense. In one sentence you say that the requirement is moderate and in another that it is massive. Many L1s have 1-2 second block time, to require thousands of confirmations is very fast although I have not seen anywhere a requirement of thousands of confirmations. Monero has a block time of 2 minutes. 720 confirmations is 1440 minutes or 24 hours. That is completely insane.
CEX do this to manage risk, ETC deposit was required to have 5k-10k confirmation post 51% attack. They see the 51% attack rumour as a threat and treat it as one. They aren't giving a chance to any loss that might occur by prematurely crediting money from a blockchain that's rumoured to be having 51% attack recently.
The L1 that requires 1-2 confirmation are L1 that's confirmed to be secure, highly decentralized, and trusted just like bitcoin, solana, and ethereum.
The lower bracket L1 usually have hundreds of confirmation. It's just the truth. Even more so after the blockchain experiences attack. It's what makes XMR different compared to BTC. XMR isn't as resilient as BTC.