He's not irredeemable. But he sure isn't worthy of any pity for having lost his job years after the fact, and getting suspended. Let's be real, he got off pretty easy, because he got to reap the rewards of team success for years before it all came to light.
None of what he got in the next decade would have materialized if people had known what a coward and ethical midget he really was at the time. He'd have been a rookie GM forced to resign in disgrace after less than a year on the job. Unlikely he ever gets another GM gig, and he sure as hell isn't getting hired to run a contender this week. No multiple Cup glory, no Olympic GM gig, etc. He owes literally all his success to people not knowing what a coward he was until more than a decade later.
You know who didn't get off easy? The actual victims, including ones that were preventable if anyone in a position of power, Bowman included, had shown even the slightest amount of character. Those victims were the cost of his inaction ... So in a way, they were the cost to build his GM career.
You think he ever wondered if that guy was still out there victimizing others? You think he ever gave the victims a second thought while he was celebrating Cups and basking in accolades and accepting Olympic jobs? Did he give a moments worth of time to assault victims until he needed to for his PR rehab? I think it's a pretty safe bet that the answer to every one of those is no.
So I hope he's grown and is a better person now, but let's be clear here, the price he paid was dwarfed by the rewards he reaped, and now it seems the rewards continue.