This and yes also excessive refactor (I'm guilty).

One case I recall was an SRE that was quite intelligent asking smart questions and management took it as insubordination. The thing is he was fighting against shipping crap that later would ruin oncall.

Another time a coworker solved a big problem, saving time. But because management was not too involved, she got a pip.

One would assume making the system more reliable would get rewarded, in some contexts this is true. Others, it has to be blessed otherwise it can cut against.