You've just brought back a vague memory where I think I recall having the same concern. Is this a milestone? I definitely remember mine not doing something along these lines that I had read he should and was worried about it.
In hindsight there was nothing to worry about it at all. He was and is completely fine. He smiles and laughs with me loads as a toddler - unless I build his stickle brick fire engine incorrectly (the most serious of crimes).
I know it's easier said than done but unless there's anything else concerning you I really wouldn't give this any mind.
I feel like the milestones and the ASQs and everything are great for screening and picking up early if maybe there's a pattern of things that suggests some intervention or support is needed. On the whole though, reading about what they "should" do at very specific ages and panicking about individual points on a checklist just saps away enjoyment.
I remember worrying because mine wasn't cooing when he was "supposed" to and the HV frowned and made a comment implying I wasn't interacting with him enough (which was completely wrong - it was in fact probably the opposite)! It was so silly looking back. He'd only been in the world a couple of months and clearly nobody told him he was expected to say "goo" yet. He did it a few weeks later.
I remember worrying he wasn't rolling over and following this YouTube video using a toy to try to make him roll. 😳
He didn't answer to his name for absolutely ages. He even went for a hearing test and was fine. I think he just didn't see a good enough reason to stop what he was doing and look.
He still has somewhat selective hearing now. He ignores you if he's absorbed in something, especially if you happen to be talking about getting pyjamas on, but if you whisper "park" from the other room he will hear it. Generally though in conversation once you have his attention his eye contact is good and he enjoys a back and forth chat.
He did other things quickly. He sat stood and cruised and walked early. He's met most of his toddler language milestones early. He can focus on one game for a long time. He is great at playing make believe and coming up with stories. He is excellent at putting puzzles together.
And on it goes like that. Right now he is terrible at using cutlery. Like really terrible. Am I worried? Not really. He just likes to eat with his hands it seems so hasn't had much practice. He evidently doesn't see the value of a spoon when he can just dunk his fingers in his stew and fish out the pieces he likes.
I imagine he won't be sat at his own wedding dinner shovelling things into his mouth with his fists and will eventually learn so never mind it. If there were other fine motor skills he struggled with perhaps I would be worried and raise it.
I think try and relax and enjoy this time and if there's something that keeps nagging at the back of your mind then by all means bring it up but try to not compare to "should" too much.
Before you know it this will likely be a vague memory at the back of your mind that you completely forgot about until you see a post on Mumsnet.