I don't think it really matters what kind of company you work for. I've worked for many software and non-software companies and the same issues crop up in both.

The main one is that scrum accelerates the accretion of technical debt, which "business people" can somehow not care about right up until the point where it drives them out of business.

It has some good ideas (retros, sprints, no deadlines) and some terrible ideas (treating team members as fungible, story pointing/velocity, too many meetings, PO has to make decisions about specific pieces of tech debt).

My main problem with it is the teachers, coaches and promoters who take an all or nothing view of it and who treat deviations from the official 'scrum' policy as, by default, problem with the team rather than, potentially, a bug in SCRUM.

I used to think that it was a good base to work from, but after arguing fruitlessly with the people who take a religious approach to it I've come to the opinion that it just needs to be trashed wherever possible, because the problems it does have will only be resolved by moving on to something else. Better to move on sooner rather than later.

So, fuck scrum.