Senior pilots could have bid MD into a category from which junior pilots got displaced. They didn't. They went for something else and either got it or didn't. Now when future A positons open up, they want to prevent juniot pilots, who bid those positions years ago, from reinstating.
I agree the MOAD was a disaster of mismanagement, but have no issues with displaced junior pilots exercising reinstatement rights per the PWA, and yes, I'm one of them trying to do so.