I find strange to output grep to a file and then press Ctrl+] from that file... It seems easier to map :tj to something like <leader>] then you can start typing

I find strange to output grep to a file and then press Ctrl+] from that file... It seems easier to map :tj to something like <leader>] then you can start typing and see what's available thanks to tab completion directly in vim. I know people don't like to supercharge Vim with plugins but gutentags works great for generating ctags and is worth it since Vim works well with them. I have tried to use cscope as it is deemed more powerful but could not be bothered to understand how to make it work.