I don’t think most of us are scared enough of being “tainted” by the sight of a GPL snippet that we’d bother. Besides, if you want to target a specific snippet

I don’t think most of us are scared enough of being “tainted” by the sight of a GPL snippet that we’d bother. Besides, if you want to target a specific snippet so you can type the start to prime the recognition - you already saw it? Why not just copy it and then edit it? If a snippet is changed both logically and syntactically to not resemble the original, then it’s no longer the original and you aren’t in any licensing trouble. There is no meaningful difference between that manual washing and a clean room implementation. All the ML changes here is the accidental vs deliberate. But it will be a worse wash than your manual one.