But the day they tell me that some Perl release has broken all (or most) of them, I would probably say, so long...

Please don't do that.
IMO, there are only 2 or 3 valid excuses for abandoning modules that one has uploaded to CPAN:
1) death
2) dementia

Otherwise, officially request that someone else start maintaining that module.
And if there are no takers, then we have:
3) no takers

Cheers,
Rob