It doesn't contradict the first line. It still refers to US companies with a physical presence in the EU.
Read this website:
https://www.privacyshield.gov/welcomeThis is an information website setup by the US government about the EU-US privacy shield agreement. The US government will issue fines to us companies located in the US with no presence in the EU if they violate data protection laws of EU citizens and vice versa. It is part of an agreement known as the EU-US privacy shield.
You should also have a think about what the implications of what you think it means are. If anyone that posts on someone else's website retained ownership then the site owner couldn't delete it then it would be a spammers charter. It's obvious that applying a little common sense says you have misunderstood it.
Sorry dude but your just went full retard right here. OF course the website owner can delete things, they aren't required to perpetually host things. You have no idea what you are talking about.