They aren't arguing what they think they are arguing when they say "But the republicans prevent us from doing things when we are in charge!!!" That is just saying "we are actually able to force republicans to do things when they are in charge because they are afraid of looking guilty." Now this isn't me saying its good that the open fascists control the government, just that libs dont actually reflect on what they are doing and saying, they are purely reactionary in their ideological stances in the literal sense of the word, they simply react to external stimuli without thinking as to what their reactions might entail.