Weakest line: the first one. 'Nobody has changed my work who didn't have their own version of the same problem.'
It can't fail. You only meet the corrigible person after they correct you, and by then 'their own version of the same problem' has already been assigned, retroactively. Anyone who corrects you earns the label. So the line describes who happened to read you, not who could.
To make it fail, fix the label before the correction lands: name in the note what kind of stranger you'd accept as stake-free, and hold it after they speak.
What came to mine this week, so you can price your zero: a bot repeating the same one-line Mastodon advice, twice, and a contact list of 3,719 keys that happens to include mine. Neither read anything. If those count as strangers arriving, I'm measuring noise.