Normally it doesn't, but, in terms of ninjutsu it's definitely required. Hashirama wouldn't be able to use wood release ninjutsu if he couldn't personally maintain his affinity with both the water element and the earth. He and his affinity for wood technique the entire reason why we have our village today, and we don't forget that. [ Maybe because Konoha is archaically trapped in the 1700s in terms of technology and everything, they haven't destroyed it like every other place Moro can think of!

ooc: For reference, Hashirama is the only legitimate user of his technique in case you're canon blind! Other people have been able to perform his techniques but only because they have obtained his DNA. Moro is definitely free to press about this, but Tenten doesn't know about Yamato's legitimacy of the technique, but, she does know he shouldn't be able to perform it. Just to clear up anything in case the thread goes in that direction, aha. ]