[raxxorrax]

This could also be used to kill off systems like SharePoint in many businesses and that would be great.

Seriously, its workflow engine has race conditions, randomly fails and has no transaction management. But there are few alternatives. I don't know why there hasn't been any real contender. You would need a full suite to challange it though.

[Angostura]

Speaking as someone who has just implemented a complex business multi-step business process workflow in Sharepoint 2016 - I concur.