brotherhood_of_LAN - 11:42 pm on Jun 18, 2013 (gmt 0)
If they are calling those thin pages "soft 404's" they probably shouldn't as clearly it can cause some confusion.
I understand why they'd want to define it as such though, basically they're saying the pages are "as good as" 404.
If there aren't links to those pages then it shouldn't be an issue at all (and I feel Google would be in error inferring that the pages existed in the first place). Otherwise, 404 should be served as normal.