If I may chirp in... I actually think the Scaler EQ is solving a problem we did not know we have instead of "solving a problem that the world does not have".

The magic High and low Shelves sound really nice but that's just a bonus. Maybe people should try it for themselves before judging it. The Scaler EQ harmonic bands does something extremely natural. Imagine boosting 3k on the vocals and taking out anything which is not in the songs key - yes, I use two bands instead of one on the same frequency to get the conventional EQ sound combined with Scaler EQ improvement. It sounds better and more natural than conventional EQs in my opinion.

With regards to passing tones. You can add these passing notes to the key. If it's jazz and it's all over the place, then it would be more cumbersome to automate the EQ so I can understand not using it for that reason. That said, most people do simple music with 3 or 4 chords without (or barely any passing) tones.

Producing, mixing and mastering is a never-ending challenge and I really appreciate an innovative product which can help clean up a mix and keep things sounding natural.

I honestly did not think I would ever buy another EQ, but Scaler EQ is brilliant, because it sounds brilliant.