I mean, a lot of the user names are not meant to be read outloud.

我的意思是， 很多用户名并不适合大声朗读。

It means if you want to improve your spanish, it will not help you to speak Spanish outloud in the car as you drive to work in the morning.

这意味着如果你想提高你的西班牙语水平，在早上开车上班的时候在车里大声说西班牙语对你没有帮助。