I agree with you. We have a completly different perspectives and references of what is enjoyable (within MSFS).
Career mode, all of it’s achievements, all of its specializations are just things that happen while flying in MSFS. Career mode is just a mission generator for people who already fly routes like the ones generated already.
Admittedly, the Company part of career is somewhat gamey. I haven’t actually seen it work passively and it locks you to the type of missions relevant to the company. I just continue to fly the other types of missions in employee mode.
Flying an aircraft and enjoying the scenery along the way is fun, at least to me.