No, it's not a simple binary like that. PIPs aren't about ability, they're about performance (as in "doing the thing"). For instance, someone who can meet the P

No, it's not a simple binary like that. PIPs aren't about ability, they're about performance (as in "doing the thing"). For instance, someone who can meet the PIP requirements can still choose not to meet them yet also choose not to resign. Those choices will probably lead them to be fired.