For me, "demeaning" does not have an emotional component in that I don't take this personally and that I don't feel much of an emotional "charge" around this... definitely nothing that is "directed" towards an organization like this.
And I made no claims about what tasks are "too lowly" for me to do, that's an orthogonal issue to the question at hand. I'll happily do simple, repetitive, potentially grueling tasks if necessary.
I'm thinking about our limited time and how this industry seems to have a unique approach to hiring. It's very challenging to apply to multiple jobs that all come with some form of code challenge and lengthy interviews, while also working full-time and taking care of a family. How do we increase the signal about where we are thinking of working?
Other folks in this thread have offered some great suggestions to this question that don't necessarily involve signing an NDA.