IMO he plays the Spock perfectly and i watched and love TOS in all its glory.
He’s not Leonard and doesn’t need to be.
These are all personal opinions anyway, but find me any one who didn’t feel it, when he went
“I’d like this ship to fly. Now!”
When I think of Spock in the original series (#TOS), I find more than a few things implausible.
Would, for example, Spock really know impossible odds with multiple unknown variables to several decimal places? More seriously, in TOS, Spock never satisfactorily explained the Vulcan logic for logic. They’ve addressed this since, but I had realized that the attachment to life is emotional, not logical, and therefore concluded that in denying emotion, Vulcans could have no logical reason to live.
Even Leonard Nimoy’s Spock addressed some of this in the movies, and they aren’t quoting odds to ludicrous precision anymore, so I find the more recent iterations of Spock much more believable.
As for the acting, Ethan Peck plays a younger, less experienced Spock. Given Vulcan lifespans, this probably shouldn’t make quite the difference we see. But that’s how I’ve accounted for that difference and I’ve been interested in seeing the backstory.