If the authors of these extensions are finding that they need to ignore the public/private boundaries of the Perl API ...

In the case I had earlier come across, I considered it possible that the author was unaware of the problem (and further pondered whether he did, in fact, need to use 'Perl_report_uninit').

It seems likely, however, that the Data::Alias author is very much aware of the situation, and sees no way to avoid using the "forbidden" functions.

.... spreading the 'EU states ethic' that you simply ignore the rules that you dislike

I like the metaphor :-)

Cheers,
Rob