These platforms are great at making use of bottom tier devs quite effectively. They're a resource amplifier, when you don't have the cash to hire better devs. Hire a few devs to create the custom controls, actions, etc.. and have a boat load of juniors implement the requirements. Most of these folk haven't picked up a new language since college, and don't incorporate coding into their lives. These individuals have value, but often create more problems due to their lack of skill and/or experience. In a low/no code environment, you can better ensure that they're on rails.
The issues we're encountering is the pricing model, and it's most likely we'll end up going with Microsoft's because of the existing contracts. ServiceNow for all it's strengths really shoots itself in the foot with pricing. A product like this benefits from any "power" user being able to implement their own internal workflows, but ServiceNow charges per dev. So they're handicapping themselves. But someone will figure out all the pieces, it's inevitable.
As a means to solve boring, repetitive, uninspired development, it's great, and it'll be the future in the way that SquareSpace and Wix ate into front end presence sites...
And honestly, if you aren't a great developer, I suspect the rails would make you feel a lot better.
This won't take any jobs from anyone likely reading this. HN frequently has a blind spot for that vast majority of enterprise development. It's not sexy, but it makes up more developers than the Silicon Valley crowd by magnitudes. And most of them would fail a Fizz Buzz. With no code, I can make use of those resources.