That's certainly another plausible interpretation, but it's not one that the license authors appear to agree with - otherwise, the additional paragraph in GPLv3 wouldn't be necessary. Individual authors may obviously disagree and refuse to enforce the license in that manner, but it's something that you probably want to confirm with the copyright holders before relying on it. It's also not an argument that any of the defendants involved in the SFC lawsuits appear to have made.
> That's certainly another plausible interpretation, but it's not one that the license authors appear to agree with - otherwise, the additional paragraph in GPLv3 wouldn't be necessary.
The FSF has stated that the additional wording in the GPL3 was to avoid confusion from other possible interpretations in the past. So I don't think the GPL3 wording proves either previous interpretation is right - it has been used to argue that either of the two is, actually - all it shows is that there was some lack of clarity.
