Yes, this is true for everyone, when you use the actual pre-check lanes. The question being raised is what happens if you have pre-check, but choose to use a non pre-check lane (or are forced to if pre-check is closed). Many people like to say "you still get pre-check perks," but it's murky as to what that really means, and if it's of any real benefit.
For example, I had a flight out of terminal B a few weeks ago, parked at the terminal, and headed through security with a carry-on full of electronic modules that I had to pull out and put in a train of bins (because there are no dedicated pre-check lanes at terminal B). I was told "you have pre-check, so leave your jacket and shoes on, but liquids and electronics have to come out." My experience is that "pre-check lite" is of little benefit, and going forward, I will likely go out of my way to use the real pre-check entries, even if it means a slightly longer trip (or a terminal change) once inside security.