People are being pretty friendly to this idea but honestly I've known more than one disgruntled developer, on their way out, who basically worked 90% of their t

People are being pretty friendly to this idea but honestly I've known more than one disgruntled developer, on their way out, who basically worked 90% of their time on their pet project, just doing the minimum work to not get fired. I don't think that is what people are advocating for but to answer the original question, I think this happens a lot where it isn't "practice" that the employer benefits from.