My goodness, of course. I would say an 8 year old should find this no bother.
The differences in parenting are immense. I am close to two other mothers who have sons identical ages to mine (now 15). I'm big on independence and teaching and then expecting life skills from children.
My DS at 10 got himself up independently each morning for school, washed, dressed, made his own breakfast, packed his own school bag and left in time for the school bus. I was not involved.
One of the other mothers still got her DS up, laid out his clothes, put cereal in a bowl and then poured milk on when he came downstairs, packed/checked his school bag and took him to school. The other mother was somewhere in between.
Different types of parenting. I'm sure the boys themselves were pretty similar in 'natural ability'.
I would allow kettles from 10. After all how would they make themselves a Pot Noodle for tea? 