I often wonder the same thing. My step son was very similar to this, when he was about 4ish if he got pen on his hand that wouldn't come off he would cry until we scrubbed it off. His mums family are very clean and tidy. Like they put their plates on tea towels on their kitchen table to eat. My partners family are also very clean, they would put a cloth next to him for him to wipe his hands and face as he was eating. And even my partners dad would be hovering around him picking up crumbs as he ate. One time I think grandad had enough of picking up the crumble he started feeding my step son himself. I'm sure it was toast that was cut up into squares.
Hes 9 in the summer and is a lot better, he grew out of the worse of it. But he will take his top off to eat his food
![See-no-evil monkey :see_no_evil: 🙈](https://cdn.jsdelivr.net/gh/joypixels/emoji-assets@5.0/png/64/1f648.png)
Its mainly his grandparents that are the worst for being clean. My partners parents (especially his dad) are complete neat freaks.
And his mothers mother is also a cleaning freak. Hates using her oven or cooking at home, they more often or not eat by going for pub grub.
It's me that's introduced the 'leave him make a mess' a mess can be cleaned.
Sorry, that was very rambly. My point is, I'm sure he will grow out of it as he gets older x