Apple did a bait and switch a few years back by actually switching from more powerful Core i5 U-series to Core i5-Y series, aka Core M. Virtually no tech media

Apple did a bait and switch a few years back by actually switching from more powerful Core i5 U-series to Core i5-Y series, aka Core M. Virtually no tech media entity paid attention to the performance difference between the two (spoiler: Core i5-Y had lower performance), because they were all too focused on regurgitating Apple's PR claims about increased battery life or some other features. Now, many years later, the Air is still stuck on a weak dual-core Core M chip, and I have no doubt the A12 Bionic in the latest iPads is actually faster than it.