Aren't most (all?) of those clearly owned and register to the individual regardless of which bank holds them? If the bank holding my stock goes out of business

Aren't most (all?) of those clearly owned and register to the individual regardless of which bank holds them? If the bank holding my stock goes out of business, it is still my stock. It doesn't just evaporate with the bank unless there is some fraud involved. Some other bank will swoop in to buy those accounts and my stock will move there. The main concern here is likely less about straight-up losing any of those investments and more the huge headache that comes with being unable to access your money while the whole process plays out.