Increasingly, no - people do not still read The Guardian. Or most other online newspapers.
I think the feminist slant is partly ideological, but also partly an attempt to capture the eyeballs of a middle class (read: relatively affluent) audience no one else is pitching for.
To me it looks suspiciously like a very calculated kind of feminism. I can't say I'm a fan, and I suspect the niche is too small to keep the paper afloat for much longer.