When a leftwinger attacks liberalism, they call it rightwing.
What prompted me to this realisation was the trashy article by state-worshipper Joan Smith. Before asserting that the state has a right to tell you what to eat and drink, she sneers; "Conservative politicians hate the nanny state. So do right-wing columnists".
This has the intention of identifying those who will disagree with her hateful, state-worshipping, boot-licking views as 'rightwing' or conservative. However, it is the liberal position, neither rightwing nor leftwing, which stands utterly opposed to her vile viewpoint.
Liberalism is founded on a principle of individual liberty and self-ownership. She does not want to attack liberalism openly, but rather seeks to paint it as rightwing and thus discredit it to those who are tribally left.