Having served on a public body "governed" by Robert's Rules, there's one very important aspect of Robert's Rules that the author seems to be overlooking. While the default case certainly does constrain brainstorming, that is not a necessary case. Robert's Rules contains, at the very least, provisions for suspending or altering the rules temporarily for just this sort of reason.

I can't count the number of times the body I served on did just this. Admittedly, this was before COVID and the ensuing discussions were easier to manage in a live, in-person, format, regardless, Robert's Rules does allow for it.

As for public meeting's law, I can only speak for Illinois' Open Meetings Act, but yes, in fact, even email can be considered a meeting in some cases. In Illinois, what constitutes a meeting is a little more limiting. According to the OMA, a meeting occurs when a majority of quorum is present. In the 30 member instance discussed in the article, that's only 8 members (one half quorum plus one); In the case of our 8 member board, that was only 3.

Now, I understand the author's frustration, but these sunshine laws are important in keeping the public's business public, so, as frustrating as it may seem, these should not be relaxed.