I can sort of see your point, but leadcore doesn't lift scales, and barbless hooks are far more damaging than microbarbed, and carp do not suffocate out of water for a good few hours.. Hopefully most people are are very carefully playing fish, landing them and treating them right o the bank, and weighing, photographing and returning them with less than 3+ hours faffing, and also keeping an eye out for bad anglers, otters, gill nets, long lines, litter and pollution and providing carp with a valuable food source while they're at it.
In short, bad fishing is most definitely worse than safER fishing, which is the point of the thread.