I don't know about popular or not, but it's definitely a take that can be easily supported from what we're shown by the character on screen. One of my first thoughts was that maybe he was experiencing a visceral memory of the taste/sensation of eating Zhu Jiu there; so specifically 'savoring' it in his memory would be a variation of that which makes a certain amount of sense. And, yeah, I saw that snarl too; whether he was finding pleasure in the memory or not, that was an unmitigated vicious expression to follow it up with.
And then, as you point out, in episode 34 we've got a quite-different-but-a-link-could-be-made expression when he is prompted to recall something harmful done to someone else, Lin Jing, where he does the infamous smug (savoring?) tongue-curl.
And when we actually see him consuming Lin Jing later, it looks even more clear to me that he's enjoying the sensation of eating someone (savoring it, as you put it), in the moment at least.
That is definitely a man who wholeheartedly enjoyed what he just did. He's pretty caught up in the experience as it's happening, but once he's finished killing Lin Jing, that smile goes all the way up to his eyes.
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And then, as you point out, in episode 34 we've got a quite-different-but-a-link-could-be-made expression when he is prompted to recall something harmful done to someone else, Lin Jing, where he does the infamous smug (savoring?) tongue-curl.
And when we actually see him consuming Lin Jing later, it looks even more clear to me that he's enjoying the sensation of eating someone (savoring it, as you put it), in the moment at least.
That is definitely a man who wholeheartedly enjoyed what he just did. He's pretty caught up in the experience as it's happening, but once he's finished killing Lin Jing, that smile goes all the way up to his eyes.