AF...
... excuses, excuses.
Regardless of which way you cut it, accepting SLS was a vote of confidence on their managing style. You don't need to defend your decision, you should applaud it. You looked after yourself and that is what counts, regardless of what part of the world you live / work in.
I am of the opinion that collectively we are much stronger than individually. But I am also a realist, and the high rate of SLS volunteers proves that we will never be collective in any issue, no matter what.
So you did what was in your interest, based solely on benefit that came to you - ie, finishing your course without repercussions. That failure would have no impact on anyone but yourself. You are not alone, there are at least another 2200 pilots that felt like you did. Congratulations, you are among the majority.
I felt that SLS was bad for me, so I voted no. You could say that I don't care about my fellow pilots, and that is why I chose to not "chip in". You would be correct.