It seems like an IDE could know if there is a single implementation and could go to it, especially if the interface is not visible outside the project ("internal" in C#). In practice, the interface is in the same file as the primary implementation, so it's not as bad as it seems. More of an annoyance.

Jetbrain’s Rider as well as their ReSharper for Visual Studio have a navigate to implementation feature which I use the shortcut key for all the time.

The fact our solution has an interface for just about everything for testing reasons doesn’t slow me down even in the slightest when I’m looking through the code.