The Secondee issue is made very clear when an offer is made. If you believe that makes one unfit for command, then maybe you should get out more.
The job is fairly easy, nice aircraft, nice people, chance of getting on, training positions open to all regardless of seat and decent hotels for the most part.
Lots of days off too.
Personally, I can retire whenever I feel like but carry on because I find it agreeable.
Not too many airlines like that these days. If the whole concept offends, don't join or look elsewhere.
Z