When I get juniour people posted in, try to limit their tour length and shield them from some of the stupidity. About 18 months seems roughly about right to meet enough people to have useful POCs when things go poorly and they need help, learn enough about some of the support side to understand how to feed the beast, and then get out of there before their will to live withers.
But senior people who's first posting to Ottawa and think they are going to change the world, that's a different story. They usually start out with some variation of thinly disguised sneering thinking people are lazy, think they are going to overrun the bureaucracy, then get stymied when people who don't work for them politely tell them it doesn't work like that.
Best case they get frustrated for a bit, then realize they can get some things done if they work in the system and at least try and shield people from pointless busy work, or trying to get everything done (instead of what you can actually do with the numbers you have). Worse case they get broken and join the cynical dark side where we have bitter dark chocolate. It's fun to watch that happen in real time.