And what I know with ADHD is that the incapacity to handle dumb meetings is just one definition of functioning. Maybe you don't need medication to clean yourself enough to prevent skin issues, prevent addiction to substances, compulsive criminal behavior, avoid hoarding behaviors, have a safe living space, have the capacity to maintain friendships/avoid loneliness, engage with social interactions in a mutually respectful manner etc. But most people I know with ADHD severely struggle with at least one of the above and I consider that functioning, not just holding down a job. My understanding is not on the level of "can you do bullshit work" but it is "can you clean your dishes before they stink" and "can you respond to being turned down by a girl without blowing up your life".

Tell them to use disposable plates or foil over their planes. Works wonders