The trade-off was worth it. But my teachers did care, they campaigned for some solution to what they saw as bad behavior from being bored and unchallenged. It did create authority problems to see the Teachers one was supposed to respect stutter on with easy problems and to see your peers having trouble spelling basic words, it was ok to be "other" from that. Early social life doesn't have to be tied to a classroom, I got that from neighborhood friends, athletics church and family. There is no excuse to having your young child wasting the opportunity of her headstart by following the same path as the other kids.
Once you are out of early ed, the honors and AP classes should provide enough challenges, it would be unusual for her to excel in every topic.
I didn't have any particular academic or career excellence other than the path I described there, turns out I just read fast and had tested out of standardized reading levels by the "third" grade but if someone hadn't intervened and noticed that I wasn't mean spirited, I just had read the whole book in the time the rest were reading three pages and now had nothing to do, I would have had a way different feeling about learning and likely would have ended up in alternative schools for being an authority issue.
Most kids in G&T programs even out with others academically over time, there is no reason to waste the younger years where she is showing advanced aptitude