I trust the banks more than my grandma to keep the keys safe, yes. They have large security teams that could be dedicated to key management. And insurance solutions would be put in place so that your funds would be replace should they lose keys.

Again, I’m not advocating against self-custody. It’s the only option for me. But if we want Bitcoin to be more than a niche, we need to accept that custodial solutions will be a thing, and probably the safest bet for most people. Just like most people have their savings in a bank and not in cash under their bed.