Exactly.. At least the last 3 or 4 White House Press Secretaries made that same salary "joke" upon leaving the position and returning back to their high paying private sector media jobs.
Yeah, but more notably, they all left after a couple years. I think it's a pretty high stress job, and leaving is probably more about the stress than the salary. It just manifests itself as "I'm not getting paid enough for this shit".
More cynically, to the extent that ex-press secretaries' private sector value derives from their access to those in power, they're worth more while their crew is still in office.