I'm familiar with the technique, and if the TV shows were educational it might be reasonable - but the content is inane trash (or to be more charitable, not things anyone has need to remember). It's like "we have 5 minutes of footage of Dave and Julie flipping this house; here's a 45 minute show".
That's a very good distinction, which my previous comment didn't really properly consider. Completely agree there.
However, a lot of TV shows - particularly USA ones seem to needlessly repeat everything like there running a lecture for amnesiacs. Here's what we're going to say in the first part, here's the first part, we say what we said we would, now a recap, then a break so we review the whole first part ... now we're 10 minutes into the show and we've seen about two minutes of unique footage. It's harrowing -- I'll take overdrawn explanations in preference to that.