The female voice changed for me recently, too. This happened on the Word app on android. I do not use read aloud on the desktop. It is very unpleasant and distracting. Honestly, it's awful. I also only have 2 choices: male or female. The previous female voice was the only one that read in a generic, non-distracting way. We don't want "more human" sounding voices that pause and add inflection in weird places. We want a steady, generic voice that helps us listen for information, errors, etc. People aren't having word documents read to them for entertainment. I would like to know if there is a way to get the previous female voice back so I can continue my work without disruption.
Think of it this way... If I paid for spaghetti at a restaurant and halfway through my meal some waiter came by and dumped a bunch of cheese all over my plate under the assumption that everyone wants cheese on their pasta, this would be wrong. Please stop making assumptions and changing our norms. If people didn't like the previous voice, they would have said so.