I think this is about branding. I wear tights. I have the Wolford hose and Sheertex. They are pantyhose, right?, but I call them tights.
I probably own 5-6 pairs of Sheertex. They do not run at all. If you machine wash them, they will get small horizontal lines that look like pantyhose runs.
I wear tights for warmth and after summer when I don’t use bronzer.