That might be a valid analysis. I'll have to ponder it. Subtext is everything.

Also in the film, there are light swipes are Starbucks and arguably pro-union sentiments expressed, although to two are unrelated:

SHREK: [bluffing his way into the Fairy Godmother's potion factory] We're from the union. Have you guys been feeling sort of down trodden or oppressed lately?

KEEBLER ELF-LIKE WORKER: [sotto voce] Are you kidding? We don't even get dental.