Extensive use of jump-cuts lets you edit single-camera monologues as if they were text. Much easier & cheaper than doing re-shoots, using multiple cameras, et c.

I can personally attest that this style was extremely off-putting to us oldsters (millennial here—yeah, we're getting old) until we'd had a few years to get used to it. It's not something you see in traditional video media unless a mistake happens, or you're watching some kind of weird art thing.