Not a dev, but I've often seen software that acknowledge their dependencies in About sections and on their websites. Is that particularly intrusive? Especially given that you could always use the GPL too if you want.
This goes beyond that. I didn't see that list of requirements; some places only say "attribution."
I would have no problem listing a library in the About dialog, but dictating the use of special icons and then all of those other requirements goes further than I've seen in any similar product.
I would have no problem listing a library in the About dialog, but dictating the use of special icons and then all of those other requirements goes further than I've seen in any similar product.