It's required because a democratic society relies on a healthy press. These are supposed to be scholars, with a code of ethics, dedicated to documentation. Journalists are not supposed to actually interfere in the system they are observing (e.g. by calling for de-platforming) because then they go from being journalists to being activists.

Edit: To be clear, I have no problem with newspapers including opinion articles about de-platforming, but there must be an acknowledgement that there's a difference between journalists and activists/thought leaders. We cannot go on mixing both.