To me, that reads as more of something he resented. There was no fear there. He simply wished it didn’t exist at all.
In other words, your line alternative reframes his exile as insecurity, not misjudgment. It drifts dangerously close to TLJ misreadings that paint Luke as avoidant. Luke didn’t fear being a legend. He misunderstood what legends are for. They’re something to strive toward, not the standard. You don’t have to be perfect, you just have to be present.
Luke isn’t narrating current events. He’s explaining cause and effect. He’s saying that fear isolates people, legends give people permission to hope, and removing himself increased fear instead of reducing it. It’s not a spoiler because it’s the lesson that Rey needs right now, because she is about to make the exact same mistake.
TL;DR - TLJ frames Luke’s exile as a philosophical mistake, not an emotional one. My line reflects that growth - he didn’t fear being a legend, he failed to understand how legends help people overcome fear. That lesson is exactly what Rey needs in this moment, as he’s about to tell her the legend of Leia to help her out of her own fear.