Why is it important to embed your demo reel at the top of your CV or resume? Because when a studio is sifting through the applications for a new animation role, it will likely start with a stack of CVs.
And, since the single most important factor in impressing a new studio with your talent is your demo reel, a link to this needs to be front and centre at the top of your CV. If it isn't, the danger is that they move on to the next candidate.
Make your work easy to find, and easy to link. No special passwords, no dead links. Do this one thing and you'll be ahead of 50% of the competition.