No, I shouldn't have retaliated to your rolling-eyed smiley at 20.36 with my own, bubbly. I agree, no excuse for meeting childish rudeness with the same, and I will happily apologise for that.
My thoughts on restrictive and controlling parental attitudes on food being linked to anorexia are in fact backed up by research, so yes, it is in my opinion highly relevant. You may of course disagree, though again, I'd appreciate a tad more respect in your manner when so doing. Personally, I think your comparing very occasional sugary treats to allowing children cigarettes and alcohol is ridiculous, though I was trying not to say so that openly. Alcohol damages a developing brain - it's dangerous to children when it isn't to adults. And cigarettes are dangerous to everyone. Sugar, in moderation, is not. The problem I have with making sugar this great big bogeyman is that we all eat it, we all enjoy it, so why deny it to kids as an occasional part of a good diet? It's not harmful, unless given in regularly in large amounts. GI/GL matters, absolutely, and I do try to be aware of that when cooking. But pleasure matters, too. Joy in eating, and in a relaxed way, matters. My son gets that from eating scrambled eggs ("delicious, mama!" he said this morning when getting down) but he also gets it from the couple of mouthfuls of pavlova he ate yesterday. And I think that's as it should be.
I think the best way to bring up healthy kids is to teach them by example. And I don't see why you'd deny the pleasures of sweet things to them, if you don't deny yourself. If the family are eating choc buttons, then no issue IMO offering them to a baby, too. It would be a problem if that were a daily occurrence. My DS refused solids very firmly until 7 months and chocolate until this past couple of months, which is the other thing - OP's dd may refuse the taste, anyway.
I suppose my touchstone with food is to be relaxed about it. For the same reason I don't fret if he eats nothing much one meal - he will the next. I think so much psychological weight is loaded on the subject, and right from infancy. Breast/bottle, baby-led/purees... sometimes, it feels like people think food choices = how much you love your child. It seems like the only explanation for the sheer level of rigidity and heat expended on the subject. And while I cheer on Jamie Oliver's efforts to educate people whose diets are so poor their kids are at genuine risk, I also know a lot of yummy mummies who are, frankly, bonkers in the other direction. I've seen a child cry at a 2nd birthday party because his mother banned the cake all the others were eating. Not for allergy reasons, or because they were vegans; because it had refined sugar in it. My apologies if you aren't one of those parents, my sense from your posts is you sounded as if you might be. Babies are curious, and if they want to sample everything, why not? I didn't offer DS choc at 6 months because it never occurred to me, but had it been Xmas, then I might have.
My mother started on my son the other day about how he'd not get any pudding unless he ate his main course. I was really cross. He would eat as much as he wanted of each, and we don't usually have pudding, anyway (he refused his pudding after all that, because he doesn't have a sweet tooth). What a way to make him devalue his main course. That was her generation's way, and it can't be all wrong because we eat well as adults. But most of us enjoy sweets sometimes, because they taste really good. The world is an amazing place to a baby, everything is new and exciting, and I don't see anything wrong in including chocolate amongst the smorgasbord of flavours available to them, as an Xmas one off. I really don't understand why that is any sort of a big deal. It's just offering a taste of one food amongst many, and the fact the OP is even thinking about whether or not it's a good idea rather makes me suspect that she won't be one who thinks a bag of monster munch and a wagon wheel washed down with a can of coke is a balanced supper.