So, it's not a safety thing?. I guess that would make it solely an economic thing?
So your side of the lobbying campaign is , " I think this hurts me financially, therefor I'm against it"
If you want more advertising bang for your buck, your message has to start with "safety and end with safety", otherwise you are in the same boat as the pro 67 guys which is, "money grubbing".

Note. You could try to extol "fairness" or, "You knew the age limit when you signed up, so get outta my seat" but that relies on no changes during one's career which seems a tad ignorant. So, stick with a SAFETY mantra in this "grey" area argument.