If speaking Spanish is a qualification for a job, it's a qualification for a job. For example, you want jobs where a qualification is a JD. You decided to go to law school. Ta da! For jobs where Spanish is a qualification, either learn the language, or look for a different job...where is the difficulty here?
I think he's just asking if a large proportion of the jobs in a Texas will require from him a qualification (speaking Spanish) that he lacks and probably will not be able to attain. He didn't phrase it the way I would have, but it's not completely unreasonable.