“Not so with playable characters, talking to them is something you rarely need and is not needed to solve the game. The playable character can also move around and when the default verb was TALK TO, it was too easy to accidentally start a conversation that you then had to exit out of.”
Sorry for this even later reply ;-). However, I would be prepared to accept your line of argumentation if it were possible to switch characters by clicking on them directly instead of the usual way (selecting them via the icons in the top right corner of the screen). Instead, all that you can do is walk to them and nothing else. That is why I still believe that right-click talk to would have been a sensible and convenient addition (cf. Monkey Island 2 et al.).
However, I do not know how the mouse button stuff is handled in the Linux and Mac versions of Thimbleweed Park. If I remember correctly, the Mac only used to have one-button mice for years. I do not know how it is the case today. Meanwhile, Linux always has, as far as I know, always supported more than one button but there you had/have the Unix tradition of being able to “left-click” with either the left or right mouse button.
So from the technical side of things, I do accept your line of argumentation. From the gameplay side, I do not.
P.S.: By the way, there is another little inconsistency: Why is the option for enabling/disabling the Ransome Unbeeped DLC under video and not sound - after all, the text does not change if you enable it