What does "correct" mean? They are at least consistent. For decades they remove major hardware controls and ports that were initially thought to be critical for use. They were the first to get rid of CD drives, floppy drives, the list is quite long.
The reality is that apple has been pretty much universally right whenever they ditch something "way too soon". There's never been a moment when a year down the line apple realized "wait, this USB thing is never going to catch on, go back to the old ports we were wrong!"
The best definition I can come up with is that Apple does not regret removing it in the future. I suspect they will be correct. I don't see people passing up on MBPs over this, and in 5-10 years people will stop missing the function keys.
