As you’ve probably seen with MEGA, this does not protect the site at all.

Take Megaupload (not MEGA), they had unencrypted data, but complied fully with DMCA and operated fully legally.

Take MEGA, they have to comply with DMCA, too, even though everything is encrypted and they never can decrypt the data, either (MEGA does literally the same as up1.ca)

Additionally, Certificate pinning only works if I visited the site before the MitM started. And some carriers like T-Mobile just strip every Certificate Pinning header anyway, as they use proxies to compress data. (Chrome’s Turbo mode does the same).

Essentially, the site uses JavaScript for showing images without providing any advantage to either the user or the site.