It's not just you. Objects that blink are hard to track (our brains aren't good at it), and working to process it anyway creates an unnecessary distraction as a secondary effect. And as a tertiary effect, this added distraction leads to a reduction in safety.

Having some movement can be good, though. This is why I went out of my way to mount reflectors on the back side of my aftermarket pedals.

Along with a constant red tail light. And a fixed red reflector.

(A grown-ass man with reflectors on his bike? You betcha. The dork disc is still intact, too. I don't like crippling surprises, and I'll look way better with a safer bike than I ever can in the hospital.)