If you feel a difference, then keep doing it. Scientific studies tell you how the sample population responds on average. If some people experience a positive effect and others get a negative effect, that can average out to look like there's no effect. In the end, what matters is how it affects you.

I can say with certainty that carbs before and during a workout helps prevent me from passing out. The effect is very obvious.

Yeah, same. After years of experimenting, my diet, and carb intake specifically, is the single variable that affects my performance in the gym the most.

Actually that's not true, the biggest is alcohol intake the night before. But carb intake the day of is a close second.