I honestly hate that the designations exist. Why can’t we all just be Halacha-observant Jews? However, for simplicity’s sake, sometimes terms need to used just to make things obvious.
To quote from a Shiur about Shemmitah that I once heard from a prominent Rabbi: “People say that the argument about whether or not the Heter Mechirah works is an argument between Tziyonim and Chareidim. This is wrong for 2 reasons. First of all, it’s Assur to say such a thing. Secondly, it’s not true.”