Yeah, good point. May just be clear and say “It is 1/5th the length”?
It should have said “…is 0.2 times longer”
Galaxies are not evenly distributed in space. Instead, when you look at the universe, galaxies are grouped in giant strings that look like a neural connections in a brain.
I wish I could upvote this more! Language is a living tool. Constant change in humanity requires communication tools that keep up.