How safe is my eth on arbitrum?

looking at how unsafe the wrapped tokens are (like soBTC and soETH issued by centralized entities) which just crashed, I am wondering how safe are eth on L2s like optimism, arbitrum, zksync, etc? And why?

Edit: what exactly happens when I bridge my eth to an L2? How do I see how many eth are distributed in various L2s? Is the original eth token actually going to the L2 or some "equivalent" representative token? So many questions to answer the WHY of my question.

Thanks!