Recently, some people have been arguing again about whether the collateralization and shared security setups are just "nested dolls."

I think it looks pretty similar: the compounded returns sound attractive, but the risks really do stack up, and when things go wrong, they won't be sympathetic.
Ordinary people balance gas fees and user experience, basically with two approaches: for daily small or frequent transactions, I use L2 to save money and hassle; for large amounts or long-term holdings, the mainnet is more reliable.
Don't be fooled by "cheap" options and move all your assets into new bridges or new chains—it's the bridge segment that's most likely to have issues.
I personally keep a habit: before using L2, check the contract upgrade history and multi-signature permissions; if I don't have time, I avoid it altogether.
For cross-chain transfers, do it in batches—better to take two steps than risk losing everything.
Forget it, I’ve been staring at this all night and my eyes are tired. Let’s not talk about it for now.