It's a public meeting (noting that it is not a PC meeting.)
There is no realistic possibility of preventing somebody recording it even if someone wanted to.
If I can see it and / or hear it, it is committed to my memory - how is this any different from audio or video recording? The main difference is that an audio / video record is more accurate, may be stored for longer and may be retrieved for reference. What's not to like about that?
I'd rather have a digital record than have people arguing over their personal recollection / interpretation which will invariably fade over time (or be intentionally misrepresented.)
This is the "so what" scenario....
A resident believes - so what?