Republicans say Pelosi is still a stereotypical San Francisco liberal. It's just that she looks relatively measured when compared with left-wing insurgents.
"She's trying to hold them back from going over the cliff," said the House's top Republican, California Rep. Kevin McCarthy. "The party has moved beyond where she has philosophically been. So she is trying to rein that back." [Source]
Actually, she's out of step with the groundswell of economic progressivism. The wave has only just begun.
Trump will eat his words concerning democratic socialism. She actually clapped when he said the US will never be socialist. That's clapping that the US will never be democratic, never be decent, never be fair, but will always favor selfishness and greed above morality.