I can’t do the “turn fast and snipe” thing like with hanzo or ashe so I might as well
No there’s nothing wrong with that, and in fact many top tier and pro players do not use the standard ~38 scoped sens.
When you scope in, it changes your field of view which changes the 3D projection. This means that there’s no actual perfect scoped sensitivity that matches 1:1. In fact that mouse movement ratio will only be 1:1 at one specific distance from your crosshair. If I recall, the ~38 scoped sens corresponds to a value of 0 distance - meaning it’s roughly equivalent mouse movement if you make very small flicks.
If you’re someone who generally makes larger flicks, a higher scoped sense can be beneficial.
Play at whatever settings make you feel comfortable. That being said, some mouse DPIs combined with certain in-game sensitivities may cause you to skip pixels, which is probably more of a problem on lower-refresh rate monitors.
The real question is, do you hit your targets with it or not.