Unfortunately I couldn't find that scene, it was probably a small mistake, I might have read it wrong. But that won't change the outcome. In the anime, we see that characters using Chidori progress faster both visually and with expressions after activating Chidori. Since this is not a multiplier, only expressions such as "very fast", "faster" can be evidence that Chidori gives the user a certain amount of speed.
First of all,
Sarada says that making a surprise attack on him in this scene will not work because he will notice it. He then uses Chidori, saying that he needs to move faster than the weaving marks to pierce it. Here Chidori gives her speed because he can move faster than the opponent. If Chidori didn't give him speed, she could blitz with her normal run without needing to use chidori. In fact, I think that Otsutsuki's superiority over the Genin characters throughout the battle can be supported by the fact that Sarada can easily attack him after activating the chidori. He also says, "
She is too fast." As I said, this can be a supporting argument.
Secondly, after the chidori is activated, we can see that its speed increases visually in the anime. I sent the video in this message.
Third, when Minato Kakashi finds the chidori, he tells him: "
It certainly has speed and destructive power." He also states, "It makes you move too fast." In other words, it allows it to move faster than normal. Once again, since this is not a multiplier, I think these explanations will be sufficient since we are talking about a small speed increase. Since it does not provide an extreme speed increase, I think it will not make any sense whether you remove it from the profile or not.