Jett has been the most consistently chosen duelist throughout the brief history of Valorant - especially at the top levels.
Auto-lock Jett is s staple of ranked play, and that has never changed.
Although Riot hit Jett with a nerf to her ultimate ability a while back, that did nothing to change her pick rate.
The reason Jett is so widely chosen is, largely, her Dash ability in combination with an Operator. Before Chamber, there were no agents even close to as proficient with the Op as Jett.
That leads us to the most recent nerf: a rework of her Dash.
Riot accurately acknowledged the power of Jett's dash in a blog post explanation.
"This lack of intentional decision making made it feel like she played outside of the tactical cycle all our other Agents adhere to," the team wrote.
"Too often, she didn’t have to leverage game sense that other Agents needed to succeed, because her reactive dash could often negate her own strategic mistakes, or the great tactical calls by her opponents."
Will the nerf be enough?
At first glance, the nerf seems like a good one. It doesn't remove Jett's unique teleport ability, but it makes it more intentional.
No longer can you hold a lane, forever, waiting for someone to peak before you can shoot and dash away.
Will this take her out of the competitive meta? I'm not sure. Insta-lock Jetts will surely still be a thing, but pro players may opt to run Chamber alone, while substituting Jett for someone like Neon.
Pro players, who are already at the top of the game, will likely be able to work within the new frameworks of what Jett can do.
Insta-lockers who are "no brain all aim" may struggle the most with the new Jett Dash, but we'll have to see. It's still early.