Imagine I use software "X" which is licensed under GPLv2-or-later and put it inside locked-down hardware. Then someone else comes along and chooses to use it u

Imagine I use software "X" which is licensed under GPLv2-or-later and put it inside locked-down hardware. Then someone else comes along and chooses to use it under GPLv3, then proceeds to sue me because I can't lock down GPLv3 software. Problem is... when you choose the GPL version in an "or later" scenario, you're choosing for yourself, not others. Thus "or later" posed no problems by itself. (The same exercise can be made regarding the patent clauses.)