Linking to someone's public posts isn't "doxing". Publicly sharing their personal details (private email address, home address, phone number, etc.) or other private information as a form if direct or indirect harassment is.
But I am not okay with unleashing random internet people on a mentally ill person, which could easily spiral into a mob that involves death threats, doxing of personal info, etc. Hell, I'm not okay doing that to a mentally healthy person.