Unfortunately I have known people much like Wally and much like the pointy-haired boss. A pointy-haired boss type is what allows a Wally to remain employed. I don't know why I laugh, but they are hilarious, and I am currently unemployed while Wally still has a job.
Wally's reputation as someone who avoids work is so strong that, even if he actually did some work, everyone would assume he found a way to get someone else to do it. There is no way anyone will actually believe that Wally did something productive. Not on purpose anyway.