I used to argue this exact same point for years but think we have reached a tipping point. Are there legit reasons to transfer? Sure....but we have moved way past that now. Parents are now moving kids not because of opportunity but as away to handle grievances and in many cases because of their own egos. Lots of unintended consequences filter through and I continue to see it grow now in the workplace.Coaches leave, principals leave, teachers leave, math students leave, band students leave, science Olympiad students leave. Band students transfer all the time. When Mr. Jones left Harding students left and the band fell off. When Dr. Gray left WC students left. WM band director is leaving and some of those students are going to WC. Hopewell gets a bunch of band transfers. Northwest school of Arts gets dance, band, and oratory transfers also.
3 of the largest HS in NC are Myers Park, Ardrey Kell, and SM. All over 3k. They are locked for transfers, but get residency/home school moves yearly. They just happen to be 3 of the best academic schools in the state. So parents are moving to them for academics but no one cares. They only fuss when its football and basketball players moving. If moves are made legally and are legit have no issue. If its falsified or games played they should be punished.
On a personal note I have found it to make HS sports far less enjoyable. No doubt I have become the old guy " get off my lawn" dude.
Nothing can be done now as it is just evolution but it just sort of sad.