Doxxing is a toxic problem on the internet. However this is not really his "personal" information. It's his professional contact information, which he publishes

Doxxing is a toxic problem on the internet. However this is not really his "personal" information. It's his professional contact information, which he publishes freely, and uses to attempt to persuade government officials. Contacting him professionally and non-aggressively is a perfectly fine thing to do.