That's true, but it doesn't mean that
Rob Ray's point is not also true. The suffragettes certainly did not bring about the extension of the voting franchise to women by their action solely. But their actions, as well as the actions of many of fighters, feed into the wider campaign.
It goes back to what
kabbes was saying, are these stunts of JSO going to suddenly cause the government to switch their minds, of course not. But that does not mean that they are completely useless or even counter productive as part of the wider struggle.