No. Make whatever judgement you like about how good the analogy was. Starting your answer with "no" might be appropriate if someone says "Fortran is a lisp" or

No. Make whatever judgement you like about how good the analogy was. Starting your answer with "no" might be appropriate if someone says "Fortran is a lisp" or "do you think cars can love", but it's not a cool thing to say if someone just states an opinion, regardless of whether or not you liked it.