An idea I grew up around was that you don't boost people up too far. That just sets them up to fall down. "High on your own supply" seems to be a modern version of that same idea. The Farquaad complex doesn't just happen a lot, it's really really hard to avoid. (Ok, https://en.wiktionary.org/wiki/high_on_one's_own_supply is backing me up here, but Urban Dictionary isn't, fwiw.)