I agree. I would be pointing out that this is a courtesy, as the third person has no right to be at the meeting, being neither an owner, tenant or proxy, and as such, permission can be withdrawn at any time.
I would add that the meeting may be adjourned while the person is removed if they fail to remain silent – and that includes, interruptions, interjections and “stage whispers”.
I’ve been at a meeting where a woman shouted abuse at the chair and demanded that the committee be sacked, loudly egging on any other voices of dissent and creating a very nasty and unnecessarily combative atmosphere.
It turned out later that she had already sold her apartment and only came to the meeting with the sole intention of causing trouble.
Stay strong.