Figure 3 is interesting. After manager vs non-manager, the strongest predictor of meeting load is whether the work is in-office or remote, with remote & hybrid workers having both more and (much) longer meetings on average. That lines up with my experience, and is one of the big reasons I dislike hybrid work in particular.

I doubt their data would have supported this, but I do wish they had distinguished hybrid from fully distributed. Anecdotally, the one time I worked at a 100% distributed organization the meetings were efficient and the meeting load was low. Not quite as low as the fully in-office companies, but I think some of that was that we deliberately padded meetings with some social time as a stand-in for the water cooler.