I have never seen any posts that say that people should wait until Norwood 4, nor have I seen any saying that you shouldn't undergo whatever treatment you like. The issue is whether society should subsidize balding folks and maybe they should because it is a huge psychological risk an impairment. But let's not invent ghosts that don't exist. Nobody is "rooting" for baldness or saying that it does not merit resources. There's a thing called capitalism and if there were something that worked even better than what we have, there are strong incentives for the system to provide it.
This is also sexual dimorphism and it has always existed without imperiling survival of the race.