Aldarc
Legend
There may be an issue herein, however, involving the difference between the De Jure and De Facto use of skills in D&D 5e. While some may believe that the former is what matters when discussing the game per the rules, I would argue that the latter in some respects reflects a more accurate sense of the game per common practice.This. @clearstream keeps posing the question as if there is an Intimidate action, comparable to the Shove or Hide actions. But there isn’t. Which is why I like shifting out example to “seduce”, to make it clear that we are talking about a general-purpose game resolution mechanic, applied when there is no specific mechanic. And within that, if it seems like a specific skill could apply to the task at hand, the DM may allow the proficiency bonus to be added.
Skills are not actions.
For example, I noted earlier that Dungeon World (and PbtA) don't really have "action skills" either. Nevertheless, players may attempt to trigger or name their Moves in the fiction as if they were. So while Dungeon World does not have "action skills" de jure, moves can cultivate a quasi-"action skill" status through gameplay.
In the case of 5e D&D, as skills are one of the most player-facing means of mechanically affecting the fiction outside (or sometimes within) of combat, would it really be surprising for them to take on an action-like quality in common practice of play?