Needless used in a sentence

Needless in a sentence as an adjective

The software ecosystems we work in have a whole lot of needless and incidental complexity.

And I'm not talking about criticism, I'm talking about needless mean, shitty behavior that gets repeated and defended all too often.

I downvoted it because it was needless speculation by an anonymous account called "routergate" which was created 35 minutes ago for the purpose of stirring the pot.

Saying things like "think it's pretty ridiculous that you're even getting the slightest bit annoyed about this", "needless to say, we'll be staying well clear of anything ur involved with in future for fear of ridiculous reaction" and using "u do realise that about 50% of all publications is content sourced from other publications right?