Recently, some netizens compared Apple's 30 billion US dollars in R&D expenditures in 2023 with the slight improvement in thickness of the new 11-inch iPad Pro, questioning the asymmetry between Apple's huge investment and results. To this, Musk replied: "That's a lot of money, maybe they have some secret product in development?" It is reported that Musk has publicly stated before that he is confused by the basically the same iPhone released by Apple every year, and he does not even know the difference between the iPhone he is currently using and the previous version.