Oh my, my plakat is hyper, fiesty, and super active. He is obsessed with the calendar on the wall a foot away. He moves faster than any of my other bettas I have now (and have had in the past). But I love him... he's my fiesty little thing. Oh, and show him his reflection, I've never seen one of my bettas get as fired up as he does.
You may just have a really chill fish. I had a betta who was like this. Nothing fazed him :)