I'm sure the actual brand/model isn't relevant here.
It could be, if the report came from coaches that ‘assumed’ “GoPro” automatically meant video-capable, and were looking for any excuse to criticize officials.
On the other hand, if the official was, in fact, using video-capable glasses to record game action without express permission from the participating institutions and his governing/assigning organization, I would think that is something that should be prohibited, and subject to disciplinary action.
If I was part of the governing/assigning organization, I would want some irrefutable proof of this activity.