One of the stranger effects of experience is that some of your best work starts taking less time.
Early in a career, quality often comes from deliberate effort: researching every option, testing several structures, rewriting repeatedly, and consciously applying rules that have not yet become instinctive.
Later, many of those decisions happen faster. That does not mean less thought went into the work. It means years of thought have been compressed into judgment.
Speed can be the result of accumulated work
An experienced writer may recognize immediately that a paragraph is solving the wrong problem. A product marketer may know which question has to be answered before the positioning will work. A technical writer may spot the missing prerequisite before drafting the procedure.
Someone watching only the clock may see a thirty-minute decision. What they are not seeing is the accumulated pattern recognition behind it.
There is still a danger on both sides
Too much pressure can turn expertise into overthinking. Too little care can turn speed into sloppiness. The goal is not to work quickly for its own sake. It is to know when another hour will materially improve the result and when it will only satisfy the feeling that good work must have been difficult.
Senior work should be judged by the quality of the decision, not by how long the decision took.