> They're equivalent in security

They aren't, security is defined as the amount of information you leak. If you have an inferior process where you're substituting the correct digital match with an in incorrect manual match, you're reducing security

> albeit more error prone

The opposite, you can't find all 925 cases of the word Xyz as efficiently on paper without the ease of a digital text search, my guess is you just have made up a different comparison (e.g., a human spending 100hrs reading paper vs some "smart" app doing 1 min of redactions) vs. the actual process quoted and criticized in my original comment

> Whether one is redacting in between or before doesn't change much

It does, the chance to make a mistake differs in these cases! Printing & scanning can't help you here, it's a totally set of mistakes

> Best practice

But this conversation is about a specific blogged-about reality, not your best practice theory!