I remove double commas when I find them in a profile I'm editing for other reasons, but getting rid of double commas across WikiTree ranks pretty low on my priority list for an error correction campaign. Double commas are an aesthetic problem that does not affect the integrity or utility of data. There are plenty of other types of errors that are more serious.
And I have a concern that the initiation of crews of Corrections Officers who focus on double commas and similar editorial errors may lead to the kind of situation seen at Wikipedia, where a person's activity feed can be dominated by minor changes like removing extra commas, adding different punctuation, and replacing hyphens with en-dashes -- detracting from the usefulness of the activity feed, and inspiring people to trim their watchlists because of the blizzard of trivial changes in their feeds.