Modify at which character 'w', 'b' and 'e' stop

First, consider using github discussions: Use https://github.com/neovim/neovim/discussions

For your query, I don’t think there is a way to change the default behaviour of those bindings. They navigate “words” which are defined in :help word and :help WORD. You could come up with a custom regex and create your own mapping, or use a plugin like leap.nvim to navigate with more precision.