geni writes:

...

One may reasonably assume that oldtimers who want their stuff removed would help us comply in removing it.

How can they help? Giving someone who rejects the licensing terms of wikipedia admin powers is not a good idea (currently it pretty much results in a block on sight).

I certainly didn't propose any such thing. One can help without having admin powers.

There are significant differences between wikipedia and other groups. Other groups have fewer angry former members

What? You've never heard of the Catholic Church? (Or, for that matter, the Church of Scientology!)

This has nothing to do with allowing opt outs. Suppose someone who made some changes to the George W. Bush article back in 2005 decided to opt out? that would require the deletion of 2 years of derivatives.

There's no particular reason to believe this is so. Not all subsequent edits would necessarily follow from the material that was changed.

--Mike