Because Putin's propaganda is just that effective. Give europeans a reason to bash Germany and they'll gladly gobble up whatever you tell them. The Kremlin has been spreading blatant lies about Germany's energy dependencies since 2021 in preperation of the invasion and internet users have been repeating those lies like a mantra ever since.

Just a couple of weeks ago Germany reduced coal power to the equivalent of shutting down several nuclear power plants as renewables generate more than enough power and prices are down to pre-war levels aswell. Besides, last year was the most profitable for energy utility companies in german history, meaning most of the price increases were simply exploitation of the narrative that "war makes energy price go up". Prices didn't need to go up nearly as much, but media couldn't shut up about their scewed narrative. I mean international media still can't shut up about it, apparently. In Germany, everyone knows we got screwed by corporate greed, not just the war.