Yes. I have done a lot of work where the customer do not put up any preferences. Some because they don't care. Some because they don't realize that maybe they should care. Some because they have figured that it doesn't matter for them.

Buf if doing commercial programming, it helps to know - and be fluent in - the languages that customers may explicitly request.

If they do request specific tools, I have the choice to either accept, or decline, to to the job. Sometimes it can be valuable to do the job even if the language isn't a favourite, just because it gives experience and might work as a door opener for other projects (for the same customer or for someone else with similar needs). The project it itself might even be very, very funny and more than well compensate for the use of sub-favourite tools.

What I have tried to say from the beginning of this thread is that there are not just one language, and that people should keep an open mind.