Lack of scroll animation support for touch devices seems like a deal breaker, no?
Works fine on Chrome and Safari
But frankly I like it better without them. They add no value to the page. When Bret Victor talks about "directing the user's eyes to the solution," [1] I believe he's assuming an information-dense display, which this is not. The page is designed (as many are now) so that only one thing is on the screen at a time. I already know how to look at the thing I'm scrolling to — that's why I'm scrolling. This eye candy is kind of nauseating and I'm happy to think it's a fad.
This is a critique of the OP, not of Webflow, which I'm sure can be put to good use.
If these codeless "devs" get hired by someone to make their website and the customer wants certain things to work, the non-coding "developer" will be at the whim of the capabilities of the WYSIWYG tool they use, not their own coding capabilities.
I suppose as long as the codeless "dev" is upfront with their clients that they don't know code and are upfront that they have a limited offering, it's ethical. As long as the client knows that certain customizations may or may not be available to them and it also reflects the cost of the "development".
Don't get me wrong, I think WYSIWYG apps are great in principle, but in practice I think it's pretty limited on where they should be applied.
That said, I'm not sure where your premise that WYSIWYG editors are necessarily less powerful than code actually comes from.