The only people who will suffer from this are those commercial pilots (single) in charter/some corporate/emergency services. That's it!
No-one else is affected.
That must amount to, what....300 pilots, if that.
Although I don't have any figures, I would have thought that there are more than 300 pilots in single pilot operations if you take into account fixed wing. But surely, the age 60 rule affects anyone who is under that age since none of us can say what will happen in the future and the airline pilots who thinks they're OK because they operate in a multi-crew environment might not think if, for some reason, they are made redundant and want/need to go back to single crew.
Cheers
Whirls