The thing is fricking white Helvetice Neue on a light blue bubble. You don´t need a retina display to conclude this is unreadable. You just need common sense.
Or just an opinion, which is what you have. It may be right, but until you have used it in anger, you must at least entertain the notion that it could very well be wrong.
White on blue is contrast enough, surely? You could also invert for black on orange, get your HN on.