What was it about the "Smack My Bitch Up" remake video that made you lose respect for the composition?
Remaking an existing hit song is much easier than making a new hit song. Making a hit song is very very very hard, even if you're using some samples along the way.
Same goes for Daft Punk. Those samples were all sitting there for the taking for years, but no one else put them together in such an electric way, supplemented perfectly with their own synths and drum machines, mixed brilliantly (there's a lot of unique and creative mixing and engineering going on) etc.
I did a little remake of the main loop of LCD Soundsystem's Someone Great. It wasn't particularly hard (once I had access to the right synths). But to have sculpted idea to use those sounds, notes, chords etc. all put together like that is brilliant.