Your reply would be much improved if it were just this part. > A neutral interpretation would be that "flying blind" is to "operate without perfect information

Your reply would be much improved if it were just this part. > A neutral interpretation would be that "flying blind" is to "operate without perfect information". It is a simple description of operating conditions, not a derogatory term in any way. Entering it would also have put less wear and tear on the input device.