Did you find it in a credible source? Which one(s)?
I've found nothing credible in Merriam Webster, Etymology Online, nor _any_ other I've searched. There is at least one low-quality ad-serving site that credits ChatGPT with a definition.
There's many uses in British literature of the 1800's, and a whole lot of uses in academic literature of the 70's to 80's. https://i.imgur.com/BhMv2nF.png "Disabuse" would fit into many of these slots, but not all.
Only common use now is RPG jargon; imbuing something with an attribute is something role playing nerds talk about, and it really needs an antonym.
I offer this correction to the author: it is "disabuse" not "disimbue".