It is as close to the real Russian pronunciation as Russian хё(р) to English "her". (That's how this and many other words are pronounced by Russians).
The key word here is "slight". What you suggest is not a slight but a total mispronunciation of Russian soft consonants.There are no examples, or vanishingly few, where a slight mispronunciation of the softness of a consonant in an otherwise correct sentence can lead to ambiguity or confusion.