It is generally accepted that there is a total climate of fear ruling within FR, that it does not pay to upset a friend of the ruling clique, and that corners are cut with regard to safety. Also that if you object to such corners being cut, you don't tend to last long. They have been clocked taxying at speeds in excess of 70 mph, fuel has been trimmed on occasion to less than the legal minimum, and while they may be making money currently and are popular with many of the punters, this is not the only measure of a good airline.
My personal opinion (FWIW, and you can take or leave this as you like) is that FR are very far from being a safe airline. I fully understand tilii's posting above, and while I know that tilii, like my, would never wish anyone out of a job, aviation would be a safer place without FR.