I've written modules that have dependencies. I've also written modules that have no dependencies, such as XML::Tiny.

Writing a good enough test suite for XML::Tiny without using any Test::* modules was a gigantic pain in the arse. But if I hadn't done it, I wouldn't have found a fair number of bugs in my code.

So I'm afraid that if you want to use any of my other modules, then in the interests of me providing you for free with well-tested, reasonably bug-free code, then you have to put up with me using all kinds of other modules. In particular for CPAN::FindDependencies I'm going to use the well-tested libwww-perl rather than write my own shonky networking code, and I'm going to use various bits of Test::* rather than write my own is_deeply() and ok() functions yet again. If you don't like this, then you are welcome to submit patches which, if I think they're of acceptable quality, I will apply to the code.

That's what's so great about open source. If you don't like what I've done, then you can contribute a fix. And if you don't like how I treat your fix, you can fork my code. If you do neither of those, then you can stick your whinging where the sun don't shine.