IMO all of these date ranges are wrong (at least, if they’re supposed to be the heyday of the genre).
It seems to be a common misconception nowadays that e.g. Jules Verne is steampunk. This is understandable, as steampunk consciously borrows the styles and tropes of that period, but he was actually just writing contemporary science fiction.
2020-2100 seems like a very questionable date range.
Wikipedia suggests it started in the 60s to 80s (Blade Runner is obviously classic cyberpunk) and gained a lot of traction in the 2010s.
https://en.m.wikipedia.org/wiki/Cyberpunk
IMO all of these date ranges are wrong (at least, if they’re supposed to be the heyday of the genre).
It seems to be a common misconception nowadays that e.g. Jules Verne is steampunk. This is understandable, as steampunk consciously borrows the styles and tropes of that period, but he was actually just writing contemporary science fiction.
I totally agree with both of you.