I've been using wfsanity since its release. I think this has more to do with seasonal wants (romance in spring, knowledge in fall/autumn, etc). For example, all of my sims, regardless of aspiration, constantly want to learn skills in autumn, and constantly want to flirt, hug, etc in spring. Summer is the most annoying season, IMO, because all my sims want to do is useless activities like play catch or Marco Polo, or catch bugs in jars. I'm not sure what would make a knowledge sim suddenly have fortune-related wants, but this type of thing has been happening regularly since installing (and re-installing) Seasons. Non-human plantsims (meaning those that were spawned by existing plantsims, not 'humans' turned into plantsims by using spray) are the worst. It seems that, no matter which aspiration you give them, they have a hodge-podge of wants having to do with no aspiration in particular. Srsly, they're all schizophrenic.
I think I'd agree with you, except I never bother with plantsims. Other than that, I'd say that if you want your students to get the wants for graduating summa cum laude etc., make sure they enter their final year in the Autumn! Moving them into an existing house or dorm when they go to college may therefore not be a good idea, as the seasons would not be the same as if they lived in a new lot. I found this problem out because I try to keep my seasons in balance with when the sim in question starts college, so whereas the first batch started in the game norm of summer/autumn, I chose with the next batch to use Paladin's weather controller to set their lot at the same season as the sims who were already there.
Of course, the weather controller can be useful in respect of wants - change the season for ten sim minutes to Autumn, and no doubt your sims will roll some useful wants, lock those you like and return the lot to the season it should be.