very unlikely. all the code is written uniformly. all the posts carry one style. it looks as if at the time there was only one person in the world who was crazy enough to think this could actually work.
i won't share all the magic but consider this: have you noticed how there are big and little endian flips littered throughout the code, especially in the script code? do you think that a single dev would just arbitrarily assign endianness throughout the code, then have the script code be big endian?
I have seen crazier things. A single developer who works on the code a bit, takes a break, then works on it a bit more can easily have switched conventions.
Author of CoreBitcoin, objc implementation of bitcoin.