if you don't mind me asking, does your partner take daily medication for it?
I discovered I have epilepsy about 2 years ago, but my case seems to be very mild. I'm now on Tegretol and haven't had any seizures since. But, of course, I know the intensity and triggers vary wildly from person to person.
He wasn't exactly wrong, as not wearing masks was still the general scientific consensus at the time, right? It was a WHO guideline, if I'm not mistaken.
If we're being sticklers, in this context you have to take the meaning of the word "master" in relation to its counterpart, "slave"; the other definitions are irrelevant.
I think the key here is "in the background". I would assume if you're speaking close to the microphone, with no other voices going on, it will not filter anything.