The author then recounts advice he gives to juniors, which is to stash the work and rewrite it, claiming that the next day the work will be rewritten in 25% of the time and 2x quality. This is unsubstantiated though. For juniors this suggests it will help them develop their capabilities to reason about implementations of problems without needing to face a a large amount of them.
The author then gives another advice which is to ask for a solution to a problem then after the initial proposal, ask for a 24h solution. This is meant to generate "the real solution". He likens it the a path algorithm heuristic to reach your goal quicker.
Overall the methods are not well discussed in terms of pros and cons, nor substantiated with experiments.
Opinion: I think they may help some juniors who need to build up experience and may become stuck in development patterns. But they would rarely be useful to develop someone to be a senior, if all they do is chase fast implementations. In a way the post gives conflicting advice: write twice and write better, and think twice and think about the fastest way to achieve the goal, instead of engineering a problem.
The author hasn't really convinced me of these approaches, and especially the last one smells of eXtreme Go Horse.