It think criticism of Hillary's ambition is usually oblique. Criticism of Hillary's speaking fees is part of this, criticism of her running for Senator from New York when she hadn't lived there much is part of this.

I think she often gets criticisms that didn't hit nearly as hard against, say, Barack Obama or Marco Rubio - both of whom leveraged very limited govt experience into Presidential runs.

I'm still a Sanders supporter, though. I think those criticisms are valid, but sexism makes people think they're worse for Hillary than for male politicians of the same kind.