Aside from the argument that it's enabling terrible practices — which I could go on about for a good few hours — the tool itself is awful. I mean it's criminally bad at what it even tries to do, putting aside the fact that what it tries to do is wrong in the first place.
I want to change an "issue" to an "epic", and I'm presented with a workflow more becoming a database migration, which of course, isn't far from the truth. They've made their poor design choices your problem, so when you want to do something like this, what you're actually presented with is all the complexity of migrating data from one database table to another with different fields.
That's just one example, but I can tell I'm ranting already. I hate Atlassian _so fucking much_ though.
It says enough that it's not marketed to people who do the work, but those who "manage" their work, where no management is needed. May it and Atlassian burn in hell for a long time. Amen.