Not only having steel plate as your back up, I would consider to have something that you can always carry whenever you go, like this bracelet. Let's say there's a wildfire happened on your house, are you gonna enter your house and find your steel plate? I'm sure the firefighter and other people will push you to go back.
But, if you wear this bracelet everyday, you don't have to worry if someday something bad happen on the place where you hide your seed phrase.
In as much as we all are utilizing many options of save guarding our seed phrase there is never a perfect one, yes we all agree that one of back storage is to have it carved on metals like stainless steal and then the next thing is how to actually safe them, for me if a large disaster like this happens it will definitely rumble the place where the seed phrase has actually been hidden and you wouldn’t find them again, but is the idea of walking around with bracelets also the right way? Personally I will say it is not because any thing can happen to you and the bracelet needed to be taken off thereby exposing it. For me secrecy is one big part of safeguarding the seed phrase.
As such with fear of natural disasters like this I will say safeguard one metal back up in your place and another backups in different locations many kilometers away from each backups. This to me seems the safest of all options