He wasn't actually a scab, he sacrificed himself trying to prevent a train crash that could have been much worse. The Pete Seeger song is a parody of the folk ballads praising him that spread up and down the railway after his death. He should be honoured as a working class hero
He wouldn't have had to if he didn't scab. Glad he died to prevent actually innocent deaths then. But if it's a fictionalized version of the story then only glad the fictionalized scab version died