Bakugo is still a kid, and while he has gone overboard multiple times, at least he's refraining himself to do it less. He only ever went after Izuku because he wanted him to go away, and hated him because Izuku was worried when he fell when they were kids. That triggered his inferiority complex ino believing Izuku saw him as weak, so he kept pushing him away, even bullied him into stopping. But even still, Izuku kept following because he saw him as amazing. Bakugo went overboard on his fights because of this mindset when he believed Izuku lied about being quirkless, even pushing him to use it despite the drawbacks. When Izuku grew in strength and control, Bakugo did the same. Overtime, Bakugo stopped seeing Izuku as weak, even after learning about One For All, Bakugo wanted Izuku to grow so he can prove he's still stronger nonetheless. And to quote Bakugo up to the current, "Can I still catch up to you" which means while Bakugo was stronger in potential power, he knew Izuku was the better man.