You hit the nail on the head. A couple years ago I started prototyping a similar node based AI workflow builder which worked well but everyone I showed it to was either; confused at how to use it (even for super basic stuff), or liked it but poked holes by asking "can it do x, can it do y" which it couldn't. There is such a small niche of people technical enough to use something like this that wouldn't just opt in for coding it themselves (especially with AI assisted coding nowadays)

I do still use a part of it on one of my projects for building multi-step image processing pipelines for AI property photo editing (ffocal.io for the curious) that are configurable in the admin panel and it works super well and is useful for modifying and testing pipelines. So there are use cases, they're just very narrow