They start putting pressure on engineering managers to make sure their team is "working". Their team clearly needs more discipline and those 'slackers' need to be cut.
What they don't see is that the engineer tossing the ball figured out that the solution they were about to spend 2 weeks coding can be achieved by leveraging an existing library requiring only a couple days effort.
Maybe this is an unpopular opinion, but that wouldn't mean that the engineer shouldn't implement in a couple days and then work on something else. HN loves the trope of the super smart engineer who is smarter than _everyone_ and can look like they're doing nothing.