> my phrasing ... is somewhat wrong

It's completely wrong.

> I stand by the position that all this doesn't seem very restrictive though.

Is your position that it's less restrictive than it needs to be?

If that's not your position, then I'm not at all sure why you're bringing this up. If that is your position, then I disagree with you. The entire point of the GPL is to require distributors to "share and share alike". It's not a "sue everyone into oblivion" license, it's a "don't be a fuckin asshole with this gift I gave you to use, inspect, and modify however you wish... pass it along to others under the same terms" license.