If some giant towering over me would sudddenly get right in my face not respecting my personal space talking in a cutesy voice I would hate it too. Maybe the giant has bad breath and/or is asking me inappropiate questions like if I have a girlfriend yet or to come and hug him. I would be terrified.

Getting down to eye level to talk to small children is the norm in early childhood education. While getting my Montessori training, we had a special portion of the program learning how to appropiately adress children in a respectful way to invite them and engage in x or y activity. Even where we had to sit to teach a lesson depending if the child is left or right handed. Small details are very very important.