When things like used cars were driving numbers people absolutely wanted to include those in the messaging. I saw zero inflation-bugs complaining that really we should be using food and energy only when those weren't the dominant forces.
But these people are largely hired and paid for by the government. The government, who has to pay extra if inflation goes up (esp. in Europe). Obviously they have a preference for lower inflation.
(and frankly, to a small extent their argument is valid. If everyone switches from Coca-Cola to Pepsi, even if they do so because it's cheaper, then Coca-Cola has no place anymore in an inflation index. Prices are meant to affect buying behaviour and products must be allowed to replace each other)
