People need to stop using realism as an argument. At it's core E:D is a game and many decisions are gameplay decisions. Slow spinup is just a negative characteristic of MCs, for gameplay reasons. Don't overthink it.
I like realism in many varieties of game and simulation. If it's what someone wants, it has value. Take a car racing sim, where significant sale value is in providing the experience a race driver might have, the best the programmers can do at that. Effort can be just as important as resources there, because they
could have a button that lets you jump 50m in the air and over the car in front of you. They don't, because they're selling a racing simulator, and a lot of people wouldn't buy it if it were Crazy Jump Cars.
"You don't have to crazy jump if you don't want to, what are you worried about!" Realism, just because I like it.