I think Rainbow was responding to his concern with increased aggression. “I’m an experienced flyer. Who are you to judge me?” I don’t think she was right to jump to that conclusion so quickly, but I think I understand why she did it. I’m also uncertain why MC was so quick to submit to her hostility and Spike’s defensive attitude; although, it did seem to produce results: friendships are intact. Might behoove MC to be wary about such things in the future.

Wonder if anypony will offer him something for those technological ideas? Diamond Tiara might be savvy enough to try to make some advancements. Figure a Princess might have thought of it first…

Applejack's expression softened as she walked over to us. "Now, now, it's alright, sugarcube," she said, giving Apple Bloom a comforting hug. Then she turned to me, her concern evident. "How're you holdin' up, Nick? That's quite a burn you got there."

https://i.imgur.com/AQWchDZ.jpg