You have to bear in mind that each instance is different even if two are exactly the same. As witg all football rules, it isn't an exact science.
With kicking the ball away, it's another of their 'clamp downs'. Last season it was time wasting. They sent off tomiyasu, made their point, and moved on. The season before it was only 3 players round the ref. They handed out a few cards for a few months and then gave up. Same with this. They made their point, and at our expense, as with last season.
Witg your other questions, they'll be plenty of arseholes doing the rounds explaining why every decision was correct. I've stopped listening to it. It's all bull****.