Probably a more accurate claim would be: The 32-bit x86 runtime was quickly overtaken by 64-bit. 32-bit apps will mostly be cross-platform C++ codebases,

Probably a more accurate claim would be: The 32-bit x86 runtime was quickly overtaken by 64-bit. 32-bit apps will mostly be cross-platform C++ codebases, which, if they use Obj-C at all, will do so very minimally.