Well, this is their personal project. You're welcome to make your own, or you can remove the branding if you want: it's open licensed. Or if you're not a coder, they even offer to remove the branding if you support the project

I don't get the impression that it's meant to be annoying, but a personal preference. I can't know that, though whitelabeling is a common thing people pay for without the original brand having made their logo extra ugly