T5i 3X to 10X digital zoom

I recently purchased the Rebel T4i.  In reviewing the specs for the T5i, I notice that it is going to have the 3X to 10X digital zoom that the T4i does not.  As I am new to the dslr industry, can you explain to me exactly what this means?  Should I exchange the T4i for the T5i?  Thank you.

Personally, I'd turn off the digital zoom.  Digital zoom is no different than opening up a photo in photoshop (or any photo software) and cropping down to a small picture (thus "magnifying" your image).  You're just tossing out all those other pixels.  All that money that you spent on have a bigger sensor with an SLR gets tossed out. If you want more zoom, buy a longer lens.  Swapping out the proper lens for the job is half the point of an SLR.
10X digital zoom is rediculous.  The quality will be crap.  They do it because the Rebel cameras are marketed to get people to upgrade from point and shoot cameras, which use that silly multiplication factor. And the "X factor" for SLR lenses is small - because it's not applicable. All it is, is the longest focal length divided by the shortest.     So the 18 - 55 that may have come with your camera is a 3X.  A 600mm prime is zero X, but it's going to get me a lot closer than any point and shoot.   But when someone goes into best buy and sees a $300 point and shoot with 15X and askes the salesman what the X factor on the more expensive T4i is, we have a problem.  Hence them putting this junk on the Rebel line.  Higher end SLR cameras have no digital zoom, because the people that use them realize it's marketing hype.
Edit:  Sorry, I never do any video on my SLRs so I don't think from that perspective.  I see the use of  (limited) digital zoom when using video.  Though I'd imagine at 10X you're still degrading image quality.

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