Yes because you will be suffering an instant loss once you get assigned to buy at the strike price when the market price will be much lower. As long as you are prepared for that, you will be fine. Unless you intend to hold the stock for the long term and is prepared to deal with the downtrend in the "short-term", you will need to cut losses or at least at some time if the stock is not recovering within your expected timeframe.
Well if his intention is to really own the stock for the long term, he can simply buy a put to hedge or write a call on it to earn some premium while the stock is going through a short-term downtrend.
So you don't think a trader should cut losses? What is the long term? How long do you tie up your capital that could be earning a better return?
When he sees it's no longer justified to hold the stock in the portfolio, yeah sure. Depends on your outlook for the company and its stock. I don't have a definite answer.
At what point do you know you are wrong about your outlook for the company and its stock? A lot of investors hit that point and continue to hold the stock for what ever reason. No one lies to themselves more than an investor underwater.
Heres the thing,he is writing a put on QQQ...IMO thats much different than writing a put on a stock..