so shouldn't
Gandalf be
the one who chooses?
Gandalf is known as the wisest of the
Maia.
Elrond is known as the wisest in
Middle-earth.
But in the end, they both know 'in the multitude of counsellors is wisdom.'
Gandalf is in Elrond's
realm, and the people who have come have not been 'summoned', but by Providence, have all come on their own missions - including Gandalf and the
hobbits.
Elrond is wise enough to see the implication, and has called the Council.
In the Medieval nature of Middle-earth, when you are in someone else's realm, they are the head of all things, and their word is law.
Just as Gandalf deferred to
Theoden, and to
Denethor, he would defer to Elrond. Yet just as he also did with them, he would voice his opinions and give his counsel into whatever was at hand.
And, in a sense, although Gandalf was their 'leader', I personally do not think he ever saw himself as such... he saw himself as a Servant fulfilling his role in aiding the people of Middle-earth in their battle against
evil. (In this particular case, against
Sauron himself as the embodiment of the primary evil of the age.)
Elrond didn't choose
Frodo... Frodo chose himself. Elrond didn't really choose
Sam...he saw Sam also as offering himself into the danger, just as Frodo had.
Merry and
Pippin both also 'choose' in their own way to go on, (Chapter 3, paragraph 1 - 5, "
The Ring Goes South") And Gandalf knows this. (Paragraph 6). Thus, he speaks on their behalf.
Elrond himself says "And I will choose you companions to go with you,
as far as they will or fortune allows.'
Then he 'chooses'. '...the Free
Peoples...'
Legolas shall be for the
Elves, and
Gimli son of
Gloin...
they are willing to go at least to the passes of the Mountains. So clearly Elrond knows of their willingness in advance... either by discussion during the time passing by, or by intuition...I suspect the former.
Aragorn is an obvious 'choice' for the reasons cited in the text.
Interestingly,
Boromir is only included because his path back to Minis Tirith lies along the same road as theirs for a time. His 'quest' or reason for going is entirely different from the rest.
So yes, Elrond 'chooses'... but does he?
There is certainly no interference with the free will of those in the Party. And Elrond errs a bit in his resistence to Merry and Pippin, both of whom play a key Providential role in
events along the way... especially Pippin,
the one whom Elrond was most concerned about but who provides for the greatest events at times of need. (The providence of Gandalf's confrontation with the
Balrog bringing about his essential death, the Providence of revealing the issues of the
Palantir and more, etc.)
So I don't see anything particularly 'amiss' with Elrond being the one to cite the composition of
the Nine. Mostly he's just citing the results of the facts at hand, in the end, and (if you will) acknowledging the decision of people who are willing to go.