That is very likely not true. If TDD is your "process" at work, then you are being forced to write your tests first.
If TDD was chosen to be your process because of erroneous assumptions about the values of TDD, its strengths and its weaknesses, and those erroneous assumptions are a result of religious zealotry squashing the heretics rather than reasoned debate, then you have a problem.
Religion belongs in the church, not in software. It frustrates me how poor the technical debates in software can be because people get so attached to their technology. It is directly analogous to an artist demanding a specific type of paint for all their work who freak out when somebody says "you know, a gallon of latex paint might be better than that tube of acrylic for painting the walls in here."