Super Smash Brothers - Got You Covered

I did a reverse image search looking for some context on this.
Source.

Basically, the person put this picture together as a "gaming challenge" for Smash fans, saying that the challenge was to play through a game that featured every playable Smash character, adding up to a grand total of 60+ games, and then finish off by playing all 4 Smash titles.

Note, the picture is a bit different on this post and in the source. In the source, Pearl is Diamond, Y is X, Punch out: Wii is changed to the NES vers., Pokemon titles were switched around, etc.

I'm not trying to sound rude, but I still don't understand. Who would want to play through the entirety of a long-ass game like Xenoblade Chronicles for this challenge?