Why not? I often take 2 or 3 basses to a gig or whatever and select the most suitable for the sound required by the band and will ask which they prefer. The band usually has an idea of the bass sound they want.
Obviously, the doesn't apply with people you play with week in week out, but with new bands. For example, I rehearsed with a band last week that I am gigging with this weekend (my first gig with them) and tried a Precision with flats and a Jazz with rounds, finger style and with a pick. We decided the best sound was the Precision with flats, but more top would help nail the sound they want, so I have re-strung the Jazz with flats for the gig.
It's not people 'telling what bass to play', it's just trying to help the band to achieve the sound that they want, and not just from the bass. In my regular blues band, the guitarist will sometime suggest that the drummer use a different snare, or tune a tom differently. We are all part of a band, and the overall sound is all that matters.