To each their own. I think he's doing a better job of playing Spock than Zachary Quinto.
I thought Quinto was (as Spock might put it) "acceptable". He did a decent job but he didn't do anything to capture the essence of Spock enough to bring any new Spock-like characteristics to the table.
Peck on the other hand may play it less like "Leonard Nimoy as Spock", but the nuances of personality I see coming through Peck's performance of the unexplored mind of young Spock is something that I can certainly believe was part of the mindset and rational of what I think I Young Spock might have been like.
We really didn't get much of Spock in
The Cage, so that era was a bit of a mystery in terms of what the character was like when he was like early in his Starfleet career, so it is up to the writers and Peck's performance to bring some of that past unknown Spock to the surface.
That performance has been particularly on display in these past two episodes, now that Spock is out of that funk he was in until he was "cured" in
Light and Shadows and he can again speak with a clear mind -- espescially in
The Red Angel. I thought the scene in
The Red Angel between he an Burnham where they both came together to bridge the chasm between them was extremely well-done. I could feel a young Spock emanating from Peck.
Yeah -- some of it was new stuff we never seen from Nimoy or Quinto, but considering this is ten years prior to TOS Spock, I'm not surprised that there are certain aspects of Young Spock's personaility that we would not necessarily see in and older TOS Spock.
In fact, I would have been more surprised if the DSC Spock was exactly like TOS Spock, as if the character is incapable of growth and change.