BLM flow and instant Cast logic problems

[Lastelli]

https://www.youtube.com/watch?v=nZ08-8cyNVw

It's lvl70 content, but BLM didn't change that much, mostly got QoL.
Since that's the producer himself playing the class, I think its a strong proof on its own if OP wants to stand on its position.
Or maybe even the producer himself was performing a lied rotation all along.

How does Yoshida not being the best BLM out there prove that BLM needs more oGCD?
The OP simply missed the difference between instant cast and oGCD ability. He's probably a sprout with a very superficial understanding of the job's mechanics.