Creative Director of the game, Graham Timmins, spoke about this on social media, responding to a fan's post showing a video with the mod and suggesting adding such an option officially so that it would appear on consoles as well. Timmins replied that it's not that simple.
"I would advise caution when using this mod. Skipping dialogues can break missions, and they can no longer be restored. Your request is much more complex and risky than it seems. This is due to how dialogues are integrated into the quest system. Don't ask how I know this."
The last phrase hints that the ability to skip was probably tested in the early stages of development, but it caused too many errors, so the idea was abandoned.
Meanwhile, in the comments, users suggested a compromise - not a complete removal of dialogues, but the ability to speed them up or rewind them without losing synchronization with missions. It remains to be hoped that the developers will find a safe solution.