I feel like good syntactic sugar should reduce cognitive load.

for example in JavaScript

    let fish = 5
    let cheese = 27
    let nop = 0x4e71

being able to do

    result = {fish,cheese,nop}

Is 'only' syntatic sugar but significantly reduces the cognitive load over

    result = {fish:fish,cheese:cheese,nope:nop}

looking at the latter it is harder to take in the options at a glance, when reviewing you have to check if the names match. If they don't match was it intentional or accidental. Whereas if you encountered

    result = {fish,cheese,nope:nop} 

You are left with no doubt that the nope is not a typo but a explicit name specifier.