There's room for both in my opinion. Keyboards are good for accuracy. Touchscreens are good for custom inputs and slightly faster to type on. In an ideal world, we'd have both.

To be frank, I find touchscreens so abhorrently useless that I just use my phone less than I'd like to - for example, I'm much more likely to just flat out ignore messages because of how tedious input is on phones. I don't know if a keyboard would make a huge difference for me since I think mobile devices are garbage in more ways than one, but the lack of a keyboard is by far the biggest issue.