at what point do you draw the line for "retro"?

https://lemmy.ml/post/1731126

The way I see it based on what was retro 20 years ago, something becomes retro when itโ€™s 20+ years old.
By pure dictionary definition. something new thatโ€™s made to look old is retro, not things that are actually old.

relating to, reviving, or being the styles and especially the fashions of the past : fashionably nostalgic or old-fashioned

Imitation is just one kind of retro. Actual old stuff is also retro. It also means to go backwards, or regress.

Donโ€™t just go by the singular definition Google gives in their dumbass blurb. Look in an actual dictionary.