Is this stuff not possible with existing editing/compositing tools? Obviously the ease of use here is going to make it mainstream, but is ML changing the game in those other spaces yet?
Machine Learning is also genuinely making new things possible. Two Minute papers has a video here: https://www.youtube.com/watch?v=22Sojtv4gbg demonstrating a model that trains on driving footage, then adjusts video game footage to look almost indistinguishable from a real world shot (and in real time!). This is technically a video game application, but it's not hard to imagine how this could be used in a video or movie context.
The extent to which this site/software actually captures these broader trends is probably minimal, but they're definitely out there. I think we're on the edge of another huge shift, like the one where CG became more practical and down-to-earth so it could be used anywhere. A lot of the same stuff will be done, but by a couple of people rather than an army of editors.
Edit: I just spent the last 25 minutes persisting with it, I'd say their auto tools are actually worse than AE. I guess it's a consumer product, but even then... seems like you'd be spending a lot of time for little reward, for example, it's not clear to me how I might refine this mask: https://share.getcloudapp.com/rRujBABR
Edit 2: I'm gonna be a little more generous and say I think the mask itself is pretty good, it can deal with some pretty complicated situations well, but the tooling is very remedial.