> Blender is such an amazing open source tool. It used to have a reputation (along with GIMP) of having a steep learning curve, but that is definitely no longer true. They recently (v2.8) did a major UI/UX overhaul and its now very easy to use.

Blender as a professional tool till has a steep learning curve, as all professional tools have. This is not a negative at all, as some has been led to believe.

There is a difference in "Hard to master" VS "Hard to get started with". GIMP is both at the time, and Blender used to be the same, but now Blender is easier to get started with than before, but as with any professional tool, it's still hard to master as the area is difficult (3D modelling, animation, simulations and more), not because the tool itself. Luckily, mastering 3DS Max, Maya, Blender, Cinema4D or any other 3D suite makes it easy to master the others, as it's mostly the UI/UX that is different between them, not the concepts themselves.

> I have an un-related hobby where I often have to edit video. In the past I've used iMovie just because it comes on my machine, but I've been meaning to try out Blender. I've heard some good things about its editing capabilities.

You're probably better off using something else unless you're using Blender heavily in your process already. It's nice that the UX of general Blender translates to the video editor so when you're deep into modelling and just need some quick video edit it's fast to do it without too much context switching. But for larger video jobs, you're better off using a dedicated video editing tool like Resolve, as it's still miles ahead of the competition.