If customers don't buy phones it's the manufacturers fault, not the customers.
I suspect that several events from 2017-21 played a role in where we are now with a bunch of iPhone models growing thicker never mind taller. Apple held a summit in 2017 because of negative feedback from influencers. Apple promised to focus on “pro” users. In 2019, Jony Ive departed so Apple lost its minimalist champion. Covid resulted in blockbuster sales that masked a drift from Jony Ive’s principles.
Apple swung too far in appeasing pro users who comprise a small fraction of its user base. Most people want thin, not thick. Fashionable, not utilitarian. Light, not heavy. Apple slowly seems to be returning to its roots, perhaps assisted by new technologies, with the iPad Pro last year, the iPhone Air this year, and a slimmer OLED MacBook Pro rumored for next year.
I would not be surprised if the iPhone Air outsells the other iPhones. If the iPhone Air succeeds, it could become a line with several sizes, including a smaller one. There’s no need to use the word “mini.” Apple does not use different names for the two sizes of iPad Airs and MacBook Airs.