Recently, I've been seeing everyone speculate, "Will the mainstream chain upgrade/hard fork cause the ecosystem to run away?" I was pretty slow to react... At first, I thought it was just emotional trading hype, but then I remembered that cross-chain is inherently tied to whether or not to "migrate."

Honestly, when it comes to cross-chain, you're not trusting the word "bridge," but rather a series of components: whether the source chain can be finalized, whether the validators/light clients in the message passing layer are reliable, whether relayers will cause trouble, whether there are vulnerabilities in the target chain's contracts, and finally, the most practical "people" involved—multi-signature or admin keys. The idea behind IBC is to put verification as much as possible on-chain, which sounds more robust, but you're still trusting the security boundaries and implementation details of both chains. Whoever upgrades the consensus or the client, the entire surrounding layer has to follow suit.

So when I see discussions about "migrating," I usually pour cold water first: it's not about whether to migrate, but about which layer you're willing to trust. Anyway, I only dare to do small cross-chain transfers now; I avoid crossing if I can... If I happen to be wrong again, I’ll just consider it a tuition fee.