That definitely depends on the context. Women's voices are often characterized as too whiny, too emotional, too bossy, too [insert sexist insult.] The content of what we say doesn't matter. Some people just hear a woman's voice and automatically tune out. Sadly, when you live it, it's hard to avoid; I didn't hate my voice for so many years for no reason.

Considering that virtual assistants like Siri only exist to follow user's commands, it might be worth considering that people aren't preferring female voices because they like them more. It's possible that people feel more comfortable giving demands to a female voice than a male one.

Just some food for thought.