You are taking on a different challenge, not a bigger challenge. Almost all of your comment could equally describe going from being an engineer to being a dog walker, or a sous chef, or a roofer. Entirely different, and in your new career your prior skills will rapidly atrophy and become marginal.
In my closing on 30-year career in this industry, "managers" have been the least important part of any team, and had the least impact on success or failure. I'm not anti-manager at all (although I have spent my entire career trying to stop people who think they are rewarding me or giving me a promotion by giving me more "manager" duties. I have zero interest in deciding compensation or going to more meetings), it just truly is a position that is the closest to fungible. Everyone fear mongers about AI replacing engineers, but in the real world it could far more easily replace manager level resources.
In my closing on 30-year career in this industry, "managers" have been the least important part of any team, and had the least impact on success or failure. I'm not anti-manager at all (although I have spent my entire career trying to stop people who think they are rewarding me or giving me a promotion by giving me more "manager" duties. I have zero interest in deciding compensation or going to more meetings), it just truly is a position that is the closest to fungible. Everyone fear mongers about AI replacing engineers, but in the real world it could far more easily replace manager level resources.