I wrote an extended blog post called Idiomatic Redux: Thoughts on Thunks, Sagas, Abstraction, and Reusability, which addresses this topic in detail. In it, I respond to several critiques of thunks and use of getState (including Dan Abramov’s comments in Accessing Redux state in an action creator?). In fact, my post was specifically inspired by questions like yours.
As a TL;DR of my post: I believe that thunks are a completely viable tool for use in Redux applications, and encourage their use. While there are some valid concerns to be aware of when using thunks and sagas, and using getState/select inside of them, these concerns should not scare you away from using thunks.