story
The stat would be more interesting if instead of 1 in 20 users, they said x in y of users with at least one commit per business day, or with at least one coding question per day, or whatever.
I suspect this could be a significantly higher percentage of professional users they plan to throttle. Be careful of defining Pro like Apple does if you market to actual professionals who earn based on using your product. Your DAUs might be a different ratio than you expect.