Scrolling through a list of a few options seems much less clunky than being asked via voice about which option I prefer. I can see multiple options at once and compare them easily. But via voice I need to keep all of the options in working memory to compare them. Harder.
The problem with scrolling is that you'll be presented tens of options you don't care about because the options have to be determined in advance and be the same for everyone.
That's why the “advanced search” is almost always hidden somewhere. And that's also why you can never find the filter you need on an e-shopping website.
