Perhaps Scrum is in the way? Is that thought EVER entertained?

The author wrote, "Poor test environment: many teams are struggling with a proper test environment. However, besides complaining, the team took no action to change the scenario."

Yes - but then what? Simply identifying an issue and not helping the team to solve it does not good. SMs often assume that if the issue is technical, "the team will self organize and figure it out". That's not leadership. Leadership is talking them through it, to help them arrive at a solution. And to do that, you must understand the topic being discussed.

So SMs need to take an interest in the technical side, and learn about it, and help to get those issues resolved - not merely point to them and sit back and wait for the team to solve it.

So often I read Scrum articles that point to esoteric philosophies about team trust and what-not or that Scrum implies all kinds of mysterious things - that one must read between the lines like in a religious text - but the real issues are usually very tangible. An effective SM must help the team to identify issues - technical or otherwise - and work through them to get them resolved.