I would say it's complicated. The scenario in my head is like this: I take "GPL3 or newer" software and build my derived software on top and distribute that wit

I would say it's complicated. The scenario in my head is like this: I take "GPL3 or newer" software and build my derived software on top and distribute that without thinking about the "or newer clause" now G pLv4 comes along, my user has the "GPLv3 or newer" component and uses GPLv4 with it, which might have requirements impacting my software ... or not ... I don't know. All I can say: that "or newer" exists and a misguided FSF can cause trouble (see also outcry with GPLv3, where people removed the or newer clause for those reasons)