It doesn't take a whole lot of effort to not be a bragging brain lord. It doesn't even take that much humility. All it takes is the ability to step back for a single second and realize that crazy self-involvement isn't a super good look. There's nothing wrong with being smart, but mistakenly believing you're a genius and polluting people's lives with your cringeworthy bragging doesn't even make you look smart. It makes you look like a narcissist.