The Register know very well what the EU is. However, in practice, the EU is colloquially referred to as "Europe" in many contexts in the UK.
The rules the EU establishes will also apply to the EEA, and in practice will almost certainly also be adopted by the UK, which has tended to take its lead from the EU on such matters since Brexit. So, while pedantically these are not rules for Europe, _for practical purposes_ they likely will be.