It might not be fun but the term is great! 'Rumor Driven Development' - definitely keeping this in my back pocket.

In consulting you tend to encounter this a lot given that its the largest visible symptom of a lot of root problems such as: 1/ no owner 2/ unaligned priorities 3/ a lot of fear or lack of ownership mentality

Generally I push for an agenda and an owner of each topic (or all topics) and a recap, preferably in a transparent location like confluence. Given all the synthesis tools in the market, synthesis has gotten easier.

I also generally push to have leadership realize how costly each meeting is and encourage people to excuse themselves from meetings if they are not: owners, influencers, stakeholders.