No. Olive oil sometimes (not always, from what I have read) gets bitter if it is whipped too hard, too fast. So theoretically any powered appliance would have this effect. I use a hand held balloon whisk. It takes time, about 15-20 minutes, to whisk one cup of oil into one egg yolk. But if you don't mind the exercise (I do not) then you won't have a bitter end product. Apparently other oils don't react like this to harsh treatment, so if speed were important to me I would use avocado oil. That said, I have made olive oil mayo in a blender in the past, and didn't have issues with it, but perhaps I was just lucky.

I found this information about what happens. It would seem that it is just extra virgin olive oil that gets bitter, so you could use a different grade if you wanted.
http://summertomato.com/the-bitter-...about-olive-oil