The meaning of the hadith: كل راية ترفع قبل قيام القائم ، فصاحبها طاغوت?

What does exactly this hadith means? > كل راية ترفع قبل قيام القائم ، فصاحبها طاغوت يعبد من دون الله عز وجل Some Shia scholars according to this hadith prove that each ruling (government) before the uprising of the Qaim (One who rises) is counted as cruel (Idolatrous) ruling. And effort to establishing a ruling is also counted useless and against Shia beliefs. Does this hadith exactly mean what I mentioned above or what else?