“Developers will be using this, so it doesn’t need to be super simple”, or “Technical users can figure this out, it doesn’t need to be streamlined for n00bs”.
That’s like saying “this book is for cryptologists, so print it in your shoddy handwriting, they’re used to decipher stuff”, or “this chair doesn’t need to be ergonomic or comfortable – it’s for the army, those guys are tough and used to deal with hardships”.
Just because your profession is dealing with difficult stuff on a daily basis, that doesn’t mean you’d want to deal with difficult stuff outside of your job as well. You might have a higher threshold for what is acceptable or not, but you’ll still appreciate when things are made easy for you, so you can instead spend your energy on, well, you know, solving difficult things you set out to solve and not random ones arbitrarily tossed at you.
Many people who’d consider themselves intelligent or computer affluent are put off by the idea of using something that was particularly designed to be super easy to use. Maybe they feel their manhood threatened by the idea that any idiot could use this, too, so it would reduce their achievement of creating anything with a “fool-proof” tool. Totally overlooking that it’s never the tool, but what you do with it.
Yes, any idiot can use a chisel, does that make the work of a sculptor like Michelangelo less remarkable? Any idiot can bang on a drum, does that lessen the genius of Steve Gadd or Billy Cobham in any way?