Lowering the retirement age is a far different rug pull than arguing against raising it. Although even that 'common knowledge' is revisionist history.

ICAO established 60 in 1947. The events you are talking about occurred in the late 50s when pilots challenged the 'forced retirements' which led to the FAA codifying the ICAO standard in regulation.

If anything ALPA spent far more effort opposing 60 than supporting it over those decades.