I guess the question is.... why would one not wear the pin?
Basically the non scab pilots who don't wear the pin are saying... Me (and my reasons for not wearing the pin) are bigger than all of us and anything we can achieve collectively. I am unique, special and are deserving of a special consideration that I have carved out for myself.
What is sophomoric is creating idealistic expectations, then going cynical when those 'expectations' aren't met. For example a National Seniority List or SOS. Most pilots who are not scabs who don't wear an ALPA pin do so for 'pet' issues or personal (real or perceived) slights.
A mature attitude would be knowing that ALPA isn't a panacea. That, like any human organization such as church, govt, corporations, NGO's, etc.. there are going to be gains and loses. Unions (ALPA) is expected to make gains and protect careers, so when it does so (and it has!) the attitude is.. "yeah, well, I expect ALPA do that... so what". However, when there is a loss, even if it is not ALPA's burden such as 9/11 or the BK era, ALPA certainly gets heavy dose of negativity that doesn't match the reciprocal of positive.
A mature attitude would also not take for granted long standing protections and benefits.
A mature attitude would realize that (as shown in the UAL 85 strike) that solidarity, meaning everyone pulling on the same rope, is feared by management. And that non scabs with slick ties only serves as a crack for management to drive its wedge.....to divide and conquer....
Knowing this... is not wearing the pin... that important?
Or said differently..... what does one expect to gain by not wearing the pin?