Evidence that Macros Do NOT Cause GCD Delay or Lost Casts

[Rin_Sato]

But rather than trust an armchair theory, why not simply engage with hard data? Check out the video evidence I provided in my first post, and let me know if you can see a meaningful difference between in the GCD.

You're absolutely right.
Please record yourself playing a complete duty with macros such as these as a demonstration, rather than armchair it against a dummy, with hardly 30 seconds of combat.
Further, I'd urge you to view the combat log of such a duty and in whatever way you please, be it by writing code or manually, figure out how much uptime you had (how many gcds you lost/didnt lose).
After posting a complete log with all actions listed along with your skill speed, it will not be difficult for others to replicate or counter whatever the "proof" ends up being, which would be a reasonably thorough methodology.

Though, it is now apparent to me that you are likely baiting, so I'll offer my apologies for not realizing this sooner.