The point is that the signature is not the same one that joe has traditionally used.
Whether or not joe is actually purposely mistaking his own signature, in hopes that he won't be held accountable, is another story. Whether or not this is being done intentionally to make these EO's null and void.., is another story.
The point is that this is not the same signature that would normally accompany a 'joe biden-certified' document. That some of us can see. Whether or not you can see and/or comprehend for yourself is a problem you will have to sort out yourself