It's 'Suspected Fingerprinters' that controls the Fingerpritning Protection feature described in the blog post. But yes, naming and descriptions is hard and never seems to work.
But to disable it on a per-site basis, I would just disable ETP for the entire site. If it's a service or site you use frequently you probably trust them or otherwise have a login to them that makes trying to avoid fingerprinting illogical.
* Cookies
* Tracking Content
* Cryptominers
* Known Fingerprinters
* Suspected Fingerprinters
But there is no separate toggle for the feature that adds noise to the image, or indication of which toggle would affect that.