What would that accomplish though for either side? Have the signatures been validated? You don't need the private key to do so. Assuming the keys are valid; e

What would that accomplish though for either side? Have the signatures been validated? You don't need the private key to do so. Assuming the keys are valid; either the emails are real, or the keys were stolen and the emails forged. I suppose if keys are released it gives plausible deniability for any leaked emails that occur AFTER the key release. So I can see why people sending incriminating emails would support this.