Yes. I'm from Spain, and here housing rental costs are included in inflation... but they're a 4% of the index. Which is laughable, as most people are spending more like 30%-50% of their income on rent.

The rationale is that most people (read: people over 50 or 60) live in houses they own, those spend 0 on rental, so if you calculate the average expenditure on rental, it's low. And buying houses counts as an "investment" so it's not included.

So basically what you say: totally gamed.