Yes, this is a pun on
https://tvtropes.org/pmwiki/pmwiki.p...adraticWizards
In Legacy edition a properly designed wizard (ST dumping little green girl) can continue to add "features" at a linear rate under the new XP system. She's off doing mighty deeds while gaining the standard 60+ XP per adventure session and hence can gain a point of mana every three sessions or so or a new spell every eight sessions or so.
The warrior monk she travels with needs to increase all of his attributes before he can buy the next level of Unarmed Combat, and so needs to double his adventure sessions for each attribute point advanced. I.e. his progression is logarithmic while hers is linear.
While a well designed warrior ought to start with some sort of combat edge, their progression over time is gonna fall off a cliff. (After the initial near-linear progression of flipping xp into +4 dx then adding the talents they're already attribute qualified for.)