What, to you, makes something a fundamental right?

The EU's document is "Charter of Fundamental Rights of the European_Union"[0], which does grant privacy as one. That pretty clearly does make it a "fundamental right".

Note the US Constitution's Bill of Rights does not offer right-to-privacy (but the 4th provides protection from searches-and-seizures without probable cause, which really doesn't deal with "privacy", especially from non-governmental actors).

Perhaps parent should have said "fundamental right granted by the EU", but in this context it's pretty clear.

[0] https://en.wikipedia.org/wiki/Charter_of_Fundamental_Rights_...