Why have 18 skills when you can have FIVE? We’re giving D&D players more agency over the narrative implementation of their skillsets by streamlining a bloated system and highlighting a popular variant rule.
Metagaming is one issue we encounter in tabletop RPGs. Players have their characters act on player knowledge that their character does not possess. A DM's defense against this is to gently remind the player to act within the confines of character knowledge. This can lead to an overcorrection where every time a single PC finds out information, the other players ask "do you tell us that?" Any time a strange routine like this becomes habitual, we should streamline the process.