Every patent application needs to have a title, but the title just needs to be short, accurate and descriptive. MPEP 606.[0]

Validity (subject matter eligibility, novelty, non-obviousness, etc.) is a separate question.

I think I would even go so far as to say that a faulty title could never invalidate a patent claim.

[0] https://www.uspto.gov/web/offices/pac/mpep/s606.html