Unfortunately, this boat has sailed. The addition of clearly defined actions like "Study" and "Influence" clearly communicates that they're trying to strip away all the need for DM adjudication and turning the skills system into some kind of predefined buttons for the players to push.
Actually, I disagree. Because I think WotC fully expects experienced DMs to run and play the game the way they want regardless of what the rules say and who won't hamstring themselves using the rules that they don't like.
'Study' and 'Influence' actions (like Skill Challenges were in 4E) are a way for WotC to begin to instruct new players on how to understand and learn how to run ability score checks (plus skill proficiencies), and in which ways those checks succeed and fail. They are simplistic, not very detailed, and are very easy for a new player to follow along and interpret. Which is what you'd want for rules when trying to teach them to someone new.
But for anyone who has actually run the game before and knows of all the different ways their players might circumvent these simplistic scenarios that these actions detail... WotC knows none of those DMs will actually use these rules. Because why would they?
Especially if they don't think the rules are useful to them. Which is why I believe they ARE this simplistic... to make it even more obvious to experienced players that you don't have to use them and that you shouldn't use them and that you don't want to use them. Because these rules are not here for
us-- they're here for new DMs and new players. Everyone else should just keep running their game the way they want, how they want to, using whatever methods they have developed for themselves over the years. And if there are new ways in these 5E24 books you want to bring into how you run your game, go right ahead.
And any DM who thinks that these rules are dumb
but still uses them because that's what the book says the rules are? In other words... "Playing RAW"? They are cutting off their nose to spite their face. And WotC can't do anything to help those people and doesn't even try. Because every single one of those people will think the "right rules" the game should have and use will be completely different than any other set of "right rules" another one of those people will believe. And thus it is statistically impossible for WotC to write a rulebook that every one of those people could use RAW and be happy with. And that's why they don't do it.
And if someone then asks "Why am I buying these new books then?"... the answer is "I don't know, why are you?" If you don't need these rulebooks because you are happy running the game you have with whatever personalized rules you have come up with from whatever edition or system you chose... you don't need to change. And WotC doesn't care if you don't. Play the game you want as you want it. That's all they care about on a personal level.