I too am an aussie swe (just 3700km up the road) who likes lots of things about working (on a much lower rung) in big (well, mid) tech. I have learned so much more in large orgs than startups, and I'm not done with it.
However:
We DO live in a late-stage-capitalist hellscape.
Large companies ARE run by aspiring robber barons who have no serious convictions beyond desiring power.
I have compromised my principles by giving them (or anyone) my labor.
but I don't lie to myself or anyone else about it. I don't find any need to rehabilitate the structural and personal failings I encounter. When my friends call me out for working at EvilCorp, I don't argue. I know it's like any job: it's all dirty money. Instead, I deal with reality: weigh up pros and cons. I judge each year just how much Corporate I'm willing to swallow to support my dependents.
I enjoy the author's redefinition of cynicism and optimism. These are useful ideas to consider and I've given it some thought, arriving at an attitude of Becoming that I guess some would call idealism.
PS OMFG I just realised its MS. I believe this is what the kids call cringe.