I don't believe anyone's predictions for the stock market. People love to do analyses. Some people get paid by writing articles about nearly anything. But if anyone really KNEW what the stock market would do, they'd keep quiet about it and become a billionaire quickly. Nobody knows what is going to happen to the market. This guy is just having fun playing with the January numbers and getting paid to write an article.
As for your question, I have zero concern. As always, I am preparing for the next market crash. Since I know that markets go up and down, and since this one has not gone down in a long time, I would expect that to happen at some point. However I know that it could be in five or ten years, or it could be tomorrow, or it might never happen.
But anyway, I refuse to be blindsided if/when it happens so I am not just sitting here grinning obliviously. I know that if/when market crashes happen, it's great to have low bare bones expenses so that one can buy low instead of selling low. Doesn't mean that I'm concerned, but I'm a realist.