like myself. i have hoards from earlier years. that have not been moved. so due to lack of multisig in early years it wouldnt have been put on multisig when first received. and (even i havnt) bothered to move coins from old stash
As I said, this story will have te positive fallout of making us reconsider why we "didn't bother" to do something.
Not stating that multisig is the right choice, but the "didn't bother to..." is the wrong one.
Every action, or every non action, means there is a need of an assessment of risks.