Short Answer: Yes, divorce does void beneficiary designations as well as will provisions.
Why it’s Important: If you want your ex-spouse to still to inherit in your estate as it was written when you were married, this needs to be addressed again after your divorce. If you do not update the Estate documents, your estate will be deemed intestate even though you have a will. The state will distribute your assets and family that you may not have a relationship with will end up with assets you fully intended to go to a former spouse.