[dylan604]

My totally made up backstory for why this is is from bad editing in the early days of chopping up multiple takes where the edit does not happen on natural sentence endings so those intonations happen at unnatural places. it then became a thing and now is done in normal delivery as a style to be emulated.

[bernawil]

Oh, around 2010 youtube (peak vlogger era) the cool thing to do in monologues was removing pauses between sentences, making a sort of galloping cadence.