this is misleading.

fingerprinting is not "nasty shit" done only by "shady websites", it's used by many services like online shops and banks for fraud prevention. Reddit uses it for ban evasion prevention.

"They abuse the html5 dom storage" no. they're using local storage to cache the fingerprint, which is a valid use case. since it takes a fraction of a second to generate a fingerprint, and possibly longer on older computers, and since they send the fingerprint with many requests that fire as you navigate the website, they store it somewhere to avoid having to recalculate it constantly. unless the characteristics of your device change, it doesn't matter whether it's stored or not, since they can always just regenerate the same fingerprint again.