Everyone leaving their mask on the entire time is the most effective way it works. The judge is seeking a compromise, presumably with the intent of being able to clearly hear him speak and see his facial expressions. I don't think anyone else will be taking their masks off, not even the lawyer asking him questions, so in that regard Gabe will still be somewhat protected.

Like I say though there are far more effective measures involving good ventillation. If you spend a long enough time in a sealed room with someone infected, even the mask won't be enough protection, but if there is good ventillation then you won't be breathing in anywhere near as much of other peoples' germs.

The case is being heard in Seattle, Washington. This is the specific order: https://cases.justia.com/federal/district-courts/washington/wawdce/2:2021cv00563/298754/170/0.pdf

Accordingly, Mr. Newell is ORDERED to attend the deposition in person as noticed. (See Dkt. No. 165-2.) In hopes of alleviating Mr. Newell’s health concerns, the Court mandates the following additional health measures: all participants (including questioning counsel) must wear a tightly fitting certified N95, KF94, or KN95 face mask throughout the deposition. At his discretion, Mr. Newell may provide those certified masks to participants. But Mr. Newell shall remove his mask when responding to questions from Plaintiffs’ counsel.

The bit about Gabe providing the masks makes me raise my eyebrow a little, but I think everyone would still be required to wear a mask regardless of whether or not Gabe hands them out at his own expense - I think it's just so that Gabe can be sure everyone's mask is up to snuff, if he's concerned about that.