Why all the cut and splice jobs?

I’ve been noticing what seems to me to be a stupid and annoying trend in commercials lately. The person talking about whatever product or store is continually being cut and spliced, so that it looks like they’re being made to say things that they didn’t intend. I can’t explain it better than this. They could just as easily had a continuous take of the person saying whatever, but instead they must be doing several takes and then putting them together a word or three at a time.
What is the philosophy behind this method? Does it annoy or disconcert anyone else? It isn’t like I ever even see a lot of tv, so I gather it must be very prevalent for me to notice it.