The first thing I do when refactoring spaghetti messes is to remove all useless and counter-productive functions and abstractions, so I can actually get one sin

The first thing I do when refactoring spaghetti messes is to remove all useless and counter-productive functions and abstractions, so I can actually get one single, huge function containing all the process. Only from there it becomes possible to have the broad view, reorganize and (re-)factorize the code again properly. So if I had to choose between both, I'd take the 5000 lines function any time, since it makes my job easier.