I'm reading a bit into his words, yes. Here's the part of interest:

"""You don’t have this problem with chat transcripts. Forcing people to reduce their otherwise rambling thoughts into concrete sentences helps focus discussion, too.

We’ll have meetings at GitHub, but I can count the number of full “meetings” we’ve had in the last year and a half on one hand."""

The former bit implying that the focus of sentences helps, the latter bit implying to keep the membership of the meeting to only those required.

Again: siloing is far more toxic than meetings in my experience. It's far too easy for a dev to wander down a path that has no value when operating in a silo. Agile tells us that we need to exist in a state of constant communication and feedback. This necessitates meeting with people in some fashion.