Nothing! I look back at the different styles throughout the decades while growing up as well and just see them as a sign of the times.
The swirly orange and black carpet we had while dressing in front of the fireplace, memories.
My student bedrooms in the 1990s, awful decor, plastered it with photos and posters, memories.
Buying our first house together, terracotta, green, yellow, purple bathroom, yes memories.
Going to modern bland beige to then bland grey, memories yes but now we're all grown up with DC and a mix of colours all to what we like
So yeah, maybe a bit of cringe but then no, styles reflected living at the time and personally it's so sad people are like sheep and just think whatever they do is modern.
Now I prefer classic evolvement, add to your house gradually according to yoir own taste.
No right or wrong and no one else should be judgemental.