Earlier quoted context omitted.
Source? If you made old.reddit.com the default layout, how many users do you think would go through the same trouble to use the new.reddit.com layout?
No they wouldn’t seek out the new interface. They just bounce. When they first launched the new interface some new users got the new one and some new users got the old one. The bounce rate for the new one was lower and the signup rate was higher.
As it happens I am an old.reddit.com dinosaur that finds your argument plausible, but I'm interested to see the data as well.