Tweaking my setup has limited benefits. It’s really fun to customize my dotfiles, pick the perfect editor, and tweak my dev setup. But I don’t think it’s a huge time saver. There are some great tools that have helped, and tinkering can be a great way to learn about how things work. But choosing the right colorscheme isn’t usually productive, and I haven’t observed a correlation between “good programmer” and “cares a lot about their editor”. (…it’s still fun, though, and I do it a lot!)