Im not speaking for bumble but wanted to address your questions as to my opinion.
1. The video "evidence" you mention in my opinion can and is seen with or without pressing L2/LT while passing.
2. You ask about the people seeing the difference, I would turn that around and ask what about all the people not seeing the difference? I am of the latter and personally can see no difference whatsoever in practice or game situations.
This is very entertaining to say the least as to this debate.