When it comes to doing a typical "anime girl" voice in particular it's almost impossible for English dubbers to please everybody. If they try imitating how those voices sound in Japanese (as is the typical norm now) it can sound "fake" and grating to a lot of people, yeah. But in cases where they try to go for something more natural sounding in English, the voice actors often get accused of sounding too old or otherwise unfitting for their characters.