Agree that good tool should be invisible. We want essential not accidental complexity in how the tool works.

But good tool should also be fun and makes us feel productive. We can't neglect the emotional aspects of designs. And at the end of the day, if a less productive tool makes us much happier, we will less likely be burned out. That is productivity in the long term.

Maybe only AI Agent doesn't care about the emotional aspects fro tool use, but that's a separate topic.

Also, it's not about steep learning curves. We want low floor, high ceiling tools. Some of the examples the author used are either low floor low ceiling, or high floor high ceiling. Neither is ideal.