I don't think I will listen to all that advices of holding longer. We are only here to make profits and face our today's challenges and also prepares for future challenges. So I don't think that investors on the short term goals are at the wrong side because the Speculation of long term holding is excessively making it feel like short term Investors are on the wrong decision
As long as you can take advantage of the conditions there is no such thing as a mistake, short term or long term depends on your ability to make profit. But if you use short term to make profit then it will be comparable to the capital issued and if your capital is small then the profit is also small. If you have good trading skills then short term can make profit will speculation will be much greater when not having the right knowledge.
The decision to run short term is your choice and you should also understand the risks. I hope it works so you can make a much larger portion of trade every time you get profit in the short term. Do your best to make profit and don't forget to learn the impact of the resulting risk so you have the right decision.