@nixCraft Occasionally my Senior Design students are able to provide me with a really good bad example.
One of last year's projects was a continuation of that sponsor's previous project. The previous project was greenfield, so there really wasn't a "production" to push to. But last year, the sponsor was actively using the previous year's project. Despite the advice of the faculty member and project manager who I assigned to the student team, the sponsor insisted that the students push to prod so that the sponsor's staff can always use the latest & greatest.
Which included insufficiently-tested code pushed just before the 5-week winter break between semesters.