It doesn't matter what you were referencing. As it's said a million times on HN, throwing out anecdotes is not data. If you have an problem with any of the specifics of how the CPI are calculated, then make it.
Here's a comparison of CPI based on how it is calculated now with how it was calculated in the 1990s and 1980s. [0] There's a pretty clear trend here. Maybe the current calculation is more accurate. But I doubt it. Looks like suppression to me.