I wouldn't argue with that take. Moreso that this all comes down to interpretation and ultimately, belief. And we're talking about a fantasy sci-fi show, in which the needs of delivering weekly shows for an audience were arguably the #1 priority, not that Roddenberry didn't do his best for all things to adhere to his "Show Bible."
Compare ST-TOS to MAS*H, par exemple. A show that took off fairly early on, and accordingly was able to make a load of uncomfortable social commentary, far in excess of TOS's more conceptual versions, somewhat in the vein of The Smothers Brothers and the American version of All in the Family.
Altho it ultimately got cancelled short of the 5yr mission, I feel like TOS was an utterly brilliant show in any number of ways, but much of it was in building parallels to the crazy global events in the world, at the time. Or simply, commentary upon human nature itself.