Thanks for the feedback!
We took the decision to not include the option to turn off fitting warnings. Disable options such as this add additional development and maintenance complexity, and with a game a large and long running as EVE, these options certainly add up over time making the game more and more time consuming to develop and maintain. That’s not to say that there are not times when it is appropriate, but in this particular case we opted to go with making the warnings as non intrusive as possible.
I hope this makes sense!