It is okay to pluck your ear hair.
However when you do pluck your ear air it can be painful and you might possibly get an infection.
So if you do pluck your ear hair you should use some hydrogen peroxide in the ear to prevent possible infection.
A better option instead of plucking your ear hair is to shave the ear hair using something such as a nose hair trimmer.
Trimming the ear hair is much better and safer and less painful than actually plucking the ear hair out.
The same is true with nose hair it's best to shave the nose hair instead of plucking the nose hair out.
Never stick any tweezers or other objects down your ear canal as it can lead to hearing loss and permanent damage to your ears.