As an older pilot who has seen the age limit go up to 65 during my career and observing the attitude of the younger pilots on this forum .... It is inevitable the age limit will go up again, if not totally removed, during your career... plan for it. You should also not assume more sh#t will not happen to you. Companies collapse, economies fail, families have problems. Deal with it and move on or become bitter and screw up your life.
Sure stuff changes. The more you seek legal challenges to established practice on discrimination grounds the more ALL customs and practice can be challenged. Seniority is de facto discriminatory - you simply cannot have 30 years seniority and be under 48 or so. So having the benefits of 30 years seniority is discriminatory for all under the age of 48 or so, no youngster can achieve those benefits, you can try to call it a reward for service, but, as it is a lifestyle thing rather than a salary thing. Losing seniority based bidding etc would change the equation for all the wrinklies trying to stay with their noses in the trough. So change the retirement age, all can change, making it worse for everyone. I hope this greedy chancer loses his selfish and self centred attempt to screw over the future of us all for his 30 pieces of silver.