> think all good people have an obligation to voice an ethical objection to their company's behavior whenever relevant.

Posting a cynical tweet does not reflect a moral high ground, specially if the person doing the tweeting doesn't express any similar concern on any other occasion regarding their line of work and how they contribute directly and indirectly to that moral hazard, and apparently gets disappointed when their employer fires them.

Frankly, it all looks like puerile attention-seeking fuelled by Twitter echo chambers.