lol i read whilst I was reading your post as your bub sounds just like my DS haha. He has done all of what you say for a while now, I just take it as they are just growing and learning and developing new ways of expressing emotions and they can come across as "tantrum". They are always changing, and once they have the leg stomping all worked out I'm sure they'll move to other things and ways of doing things. My boy has always been a screamer too hehe definitely demanding but I do think it's most likely just practising and going through a stage. My bub also munches on absolutely everything (well tries to)and for the last 3 months we've been trying to find that first tooth we could have sworn is causing all the drama lol but no tooth yet!! And gotta love the nosediving! So cute how you can see all the excitement and frustration and different emotions more evidently from them as they grow.