There are many other places where a short walk between stations on
different lines is the best way of making the journey for most people.

The problem seems to be that LUL's perception of what is a short walk
between stations and that of most people is quite different. I suspect that
LUL use staff that are off work with bad ankles (inbetween squash games) to
identify their interchanges.

That seems to be the case most of the time. Then they claimed that
Euston Sq was vaguely near Euston (actually, the exit's closer to
Warren St).