Yeah, partly. Bad DX may make more things difficult and so make feature requests seem harder.
But the more urgent part for me: bad DX can stunt potential collaborators in the 'user' stage of development for a tool. Then you get feature requests like, "can you add a preference for this so that I don't have to put up with your crappy build+install process to modify it for myself?" which further complicate the codebase.
The eco-system for Vim (and probably other text editors) shows this problem so much. You start out with a text editor that's easy to build. As it gets harder to build you get rc (settings) files, then turing-complete rc files, then plugin architectures for rc files, then plugins for plugins. And all this time people are getting increasingly discouraged from just hacking on the editor to learn how to help themselves in ways others may not have anticipated. Here's a concrete example:
https://mastodon.social/@akkartik/103994830568601931