And I find your post odd. The poster you quoted specifically said that the look was popular 10 years ago so would look dated today (although I'd say it was more 5ish years ago, I don't remember seeing it much in 2015). OP asked if the dress looked dated, so it's clearly something she buys into.
I just do not understand posters who come onto a S&B thread specifically about trends or whether an outfit has had its day, and argue that trends aren't or shouldn't be a thing. We're all aware we can wear whatever we like, but if OP wants to avoid looking dated that's her business. When something is incredibly popular it does begin to look 'of its time'. Brown living rooms of the 70s, blue mascara, perms and legwarmers of the 80s, the moustache tattoo on the index finger of the early 2010s... If I went out tonight in a mini bandage skirt, vest top and stiletto heels I'd look like I'd been asleep since 2010, you can't deny that certain outfits do look of their time.
Back on topic - I don't like the dress personally, but it's not my style. I agree it would be dated if styled a certain way, but if you have a more boho style you could probably pull it off.