It's a clear enough moral issue that whichever side of it you end up on is likely to have life-shaping consequences 5 or 10 years down the line. It's predictable that there will be domestic or international conflict with a high cost in lives and political coherence over that timescale, and being someone who 'was in AI' at a government scale vendor is qualitatively different from being a database admin o font designer or UX specialist.

Substantively, individual employees of these firms may have little or no actual impact on this. But AI is ubiquitous enough and disruptive enough that being professionally connected with it at a time of great geopolitical instability has the potential to be a very very bad look later.