Hi Shel! It's true, there is an urgency to that drumbeat, but I think that "implant early!" is the message ONLY if you are considering spoken language to be important either to you or for your child. It seems to come up only when people say that they will wait until their child is old enough to make the choice. Rockdrummer put it more eloquently, but said something to the effect of if you don't implant early, you are making the choice for your child.
But valuing spoken language is very different from considering someone without it to not be whole. For example, I value beautiful music and the ability to create it, but I don't feel like only part a person because I don't have that ability (people cringe when I sing). My daughter is totally deaf and she can sing on pitch - sometimes - and loves to play piano. We've provided her with keyboard and lessons, we surround her with music and lots of encouragement, and if she wants to watch TV vs play piano I'll coax her to the piano (though television sometimes wins), but if she drops her lessons at 8 and never plays again, chooses soccer or painting, I would never consider her a piano failure or not whole. And I don't think that having learned to play piano young has ruined her for the non-piano-playing community. It just gives her the foundation for playing enjoyably early on.
I'm not saying you are a bad parent if you don't provide piano lessons (or spoken language)! I'm not providing ballet lessons, which -- as another area that very young children can pick up more easily than older children -- is making a choice for her. I do value the grace, skill, and discipline involved in ballet that she would carry throughout her life, but we took her to watch dancers, we took her to watch concerts, and we observed her natural leanings, and piano it was. Our values and our child's interests together shape her options.