Breach is simply a bottom 3 agent, and the teams still running him are shooting themselves in the foot.
All of his utility (especially the nerfed stun) is so predictable and easy to dodge, without meaningfully clearing anything. All he does is bait the team into thinking they can util crutch in teamfights. Breach comps have won only 2/9 non-mirror matchups in Toronto.
That being said, Phoenix + Neon double duelist is the future.