Just out of interest - the people saying its a horrible outfit, what sort of stuff do you dress your babies in? Just leggings / sweatshirts etc?
I do like rompers actually, but I don't really like the one in the OP - I don't like fussy collars like that and I'm not keen on the navy gingham. I also don't really have an interest in soldiers as a theme for clothing - it's not something that looks nice, like flowers/fish, it's not something children are interested in like animals/cars, it's not something I personally am interested in (I would buy Harry Potter baby clothes, DH would buy superhero baby clothes). There is nothing wrong with it, but it's not to my taste.
But generally yes my babies/toddlers are dressed in long sleeved t-shirts with a picture on, with brightly coloured and/or patterned soft jogging bottoms, with a sweatshirt or hoodie if it's colder. What's not to like? They are comfy, easy to get on, allow for movement and tend to be easy to wash. You can also find them in loads of cute designs.
Or a sleepsuit if under 3ish months or it's night time. Rompers or t-shirt/shorts in the summer but I tend to go for stuff with cleaner edges/more modern design.
I've not had a girl so I'm not sure how dresses would fit into this but would probably have some dresses in there somewhere.
Just out of curiosity, why are so many people against gendered clothing?
Because it's boring - you end up with overwhelming amounts of blue and grey for boys, and pink for girls. I like variety in colour, that makes me happy.
And, because some of us believe that the idea of things being "for girls" and "for boys" is the thin, harmless seeming end of a wedge which ends in seriously harmful gender stereotypes such as "Boys don't cry" and "Girls are no good at maths". Why support the idea that girls and boys are so different that they need totally different clothes?