It wasn’t a lie. They did use women snipers, they also used women in tank crews, artillery crews, infantry unit medics, infantry unit radio operators, they used them as fighter and bomber pilots and crew members. The fact that they did not use them after WWII shows how desperate the Reds were during the War. After the war ended and the Red army demobilized, there was enough manpower to meet the military needs of the post war Soviet Army, so women were no longer assigned to these rolls.
The Soviet Union had women in the military before ww2 as well. They were an advanced Marxist/feminist nation after all. The women made good propganda copy but were disbanded in 1944 when it became clear they were more of a liability than an asset. The Marxist propaganda on the subject continues to live on spread both by Marxists and their useful dupes.