Comment by BlargMcLarg

It's a tradeoff between priorities. Easiest seen in speech vs writing.

Speech is on the speaker's flow primarily. Listeners are expected to keep up not just in vocabulary, but speed among others.

Writing is far friendlier to the reader, being able to set their own pace.

Interruptions allow listeners to shift the balance at the cost of potentially destroying the pace. And sometimes destroying the pace is necessary (e.g. endless discussions).