No, I have not ever seen it work well. I was so frustrated by its prevalence in the industry that it was one of the main reasons why I decided to leave software development and work in cyber security / penetration testing instead.

I have since returned to software dev because the fact is I love coding and development but I try to minimise the time I spend working for companies by only working short term contracts while working on side projects inbetween jobs. If one of my side projects becomes successful and I end up hiring developers then there is no way in hell I will be forcing the horrorshow that is Scrum on them. Yes, yes I know "thats not real Scrum", but that doesn't change the day to day reality of working in teams that follow Scrum, or "Scrum".