Regulators can never be held to anything they say. When you ask questions, if they answer at all, it always comes with a disclaimer that it's merely "guidance" and not binding. If they later change their mind, it's always a "clarification" and not a change.
The sort of people who think vague regulations are a good idea are the sort of people who think regulators are staffed by people who are inherently good, so they're usually written to give regulators maximum power and minimum accountability. GDPR is a case in point. If you read the EU's documents on the matter closely, and I have, then you find that the EU refuses to even respond to questions at all. That's delegated to national regulators, but the EU is clear that those regulators don't have the power to issue binding declarations, only guidance. In other words, you can ask a regulator or a lawyer. Their opinion has no more or less weight than my own posts do. The only time binding decisions are made is during enforcement actions.
