I don't mind them having the new Lego Friends range. Some children, of both genders will like it.
I do mind then switching my daughter's 'normal' Lego Club magazine to Lego Club GIRLS magazine and making me call them to switch it back. And having a special magazine for girls which makes boys the 'default' and girls something other and different.
If it's all the same, I'd prefer to have to opt into ridiculous gender stereotyping for my daughter than have to opt out of it. Or, you know, just have one magazine that features all the ranges so children can choose freely from them according to their interests and personality rather than being shown special toys to suit their gender....