I might not agree that a 2 year old should be breast fed to sleep - but if someone else wants to do this, then great for them! I would never dream of telling them they shouldn't be doing it. If it works for them then that's fantastic.
I detest reading comments that insinuate leaving a baby to cry a little is somehow damaging them. If this is how you feel don't do it, but keep your comments to yourselves.
I think part of the issue also is that so many paediatricians recommend CC methods. I was given a handout on CC (as in how to implement) the day I left hospital and needless to say I didn't go back to that paed. Fair enough if I had asked for help settling my baby but I still can't believe I was given that when my babe was but a few days old! This sort of thing no doubt creates a divide among professionals when the education should be on how to read your babies cues, with sleep/settling techniques reserved for those struggling and in need of advice.