Nope, perfectly normal! Sounds like he’s discovering opposites: in/ out and on/off in these scenarios. Can play with him by adding more opposites like over/ under, clean/ dirty, up/down, together/ apart. Most infants and toddlers will have a singular learning focus they’ll do until they feel they’ve mastered the skill before moving on to another skill.
This is how 2 year olds play. They like taking things apart and putting them together in different ways. Stacking cups, felt boards, magnets and reusable stickers are good toys when they are interested in this
Two is still so young. I think if he can do 'functional play' (like mixing in a pan) sometimes that's pretty dang good.
I personally wouldn’t be worried. My son doesn’t ’play properly’ with his stuff, he’ll learn x