Answered by Tom, Hiring Expert at VF Corporation, on Monday, February 11, 2019
I think this is all relative, I work in a company that allows casual dress all the time and that includes the CEO on down. Interestingly, I actually have started getting offended when I'm asked to dress up, not at work, but at work-related functions like outside meetings/conferences, etc. Not suggesting I'm right in feeling that, but my opinion has certainly changed since working for 7+ years in financial services.
Bottom-line, I think what you need to keep in mind is the last line in the article you reference:
"But make sure to follow the "plus or minus one" rule for company dress. For example, if most people in the office wear button-up shirts, you might want to put on a blazer. If most people wear blazers, you might want to wear a suit. And so on."
If you came to work in my company wearing a suit and tie all the time, it might be viewed negatively as it is so far away from the norm. That is not to say you have to conform either. We embrace a movement at my company called "free to be", so nothing prevents you from that suit and tie, but it would be viewed as just another personal style choice, no different than the person in a T-shirt and jeans vs. a confidence or dress for success play.
That said, at previous employers, it made a difference and it really doesn't matter what other employers are doing only the one that you are at right now, so if you feel comfortable and confident dressing up, do it! You can't please everybody all the time!