There is no contradiction if you apply common social norms like people wearing shoes, like the most people in the modern world shoes are essential. Only a few people have overcome that paradigm
And the no-shoe event was for the masses and not for the special people who decided to wear shoes anyway.
Whats more disturbing is that those event is more limited to areas with accommodating temperatures, in all videos you see people in shorts and bare feet so not much contribution from Europe because its still kind of cold here. It really gets a different flavour if you go out barefoot in colder conditions.
I guess it would have been smarter to send medical supplies than shoes, one day without meds would have had a far greater impact I bet
Another funny thing to see, although it was called on day without shoes, everyone took their socks off also. It will be interesting to see how people turn out after those events, in some videos people dedicated themselves to walking 10miles barefoot or the whole year or something as if this was some sort of atonement, I guess some of them will realize that its more like a self-given gift