I see it the whole time even in high elo and pros, breach players just stun when the round starts without any reason. Why is that ?

On attack i try to save my stun for when my team is pushing to clear something like a chamber…., or wait till the enemy team or someone actually shows up so i can stun them on defense.

I feel like there are lots of better uses for the stun other than just spamming it when the round starts everytime, especially with the high CD. Am i missing something ?(probably lol)