This is actually just a sign of dementia. Slipping memory, regressing personality and your muscaluture actively failing you results in most people seeing their signature change considerably in their last years of life
You'd think they'd have given him blue contacts but maybe he'd have too much trouble putting them in given the current state of him. They probably thought why bother, most people apparently won't notice and if he looks close enough to real Biden that is all that is needed because most people don't pay attention.
This is actually just a sign of dementia. Slipping memory, regressing personality and your muscaluture actively failing you results in most people seeing their signature change considerably in their last years of life
His eyes have changed from blue to brown too.
You'd think they'd have given him blue contacts but maybe he'd have too much trouble putting them in given the current state of him. They probably thought why bother, most people apparently won't notice and if he looks close enough to real Biden that is all that is needed because most people don't pay attention.