I said "county" not country; you're having a different conversation. We're discussing small claims court at the county level. You don't sue someone in "United States court", you sue them in a county court, usually in the county where the matter being sued over happened, but sometimes the appropriate jurisdiction is the home county of the person or company you're suing (if it's not the same as where the matter took place).
The best explanation for this I could find is here: https://www.nolo.com/legal-encyclopedia/free-books/small-cla...
But, it doesn't really answer the question. The agreement between Facebook or YouTube and the uploader definitely requires suits be brought in the jurisdiction of the company (so, Delaware, probably, but maybe California). Sony is using Facebook or Google to do their dirty work in these cases...so, who can you sue and where? I don't think it's at all clear that Sony could be sued in a local small claims court for a matter like this, though I would like for them to be.