FIL comes to stay every couple of months and this is a habit of his. I cook, I place the meal in front of everyone at the table and before we've all picked up our knives and forks he's shaking salt onto his food.
He hasn't tasted it, he doesn't know if the seasoning is to his taste or not, he just goes ahead and does it.
On Saturday I made everyone cheese and pepperoni omelettes for breakfast. As he went to pick up the salt I stopped him and said, 'you should try it first, pepperoni tends to be quite salty' so he tried it, and lo and behold he didn't want any.
He's wasted food before, declaring he couldn't eat anymore because it was a bit salty. After he'd shaken a load on before tasting it 
AIBU to find this really rude?