That is the official movie cannon age, but not canon from JRRT.
It is a reasonable estimate as he was probably born in the early Third Age. He is well over 500, based on his statement that 500 years since the building of Meduseld felt like “a little while”. So, anywhere 2-3k yo is reasonable.
I get the astrix for gandalf, he wasn’t born as much as sent to embody an avatar in middle earth. But why astrix for legolas?
IIRC Tolkien never states his age.
asterisk*
That is the official movie cannon age, but not canon from JRRT.
It is a reasonable estimate as he was probably born in the early Third Age. He is well over 500, based on his statement that 500 years since the building of Meduseld felt like “a little while”. So, anywhere 2-3k yo is reasonable.