It’s a lesson they should have learned from the iPhone 5c, which wasn’t much cheaper than the iPhone 5s (£80 UK according to old news articles) but offered a lot less in terms of features. The materials were noticeably cheaper: there was no Touch ID, it was 32bit, there was no motion coprocessor and it lacked the camera upgrades of the 5s. It felt like people bought it mainly if they wanted an actual colour and gold wasn’t to their taste, or they couldn’t get hold of a 5s (which were in very short supply at launch.)Is this really a surprise? Apple launched a “budget” iPhone at $599
The low 400s starting price of the latest SE was just about acceptable to the budget market, which turned out to be as price sensitive as the budget iPad one. I’d argue they could get away with a bit more in the iPad market, since there are fewer alternatives. Like the iPad 10, the iPhone 16e isn’t a budget model, it’s a half way house - they just happened to take away the budget option in the latter case. The iPad 11 is, I assume, selling a lot better with its internal upgrades and price cut so wasn’t an inherently bad design.