Dired: One confirmation for all selected files and directories

Use-case:

1. Mark for deletion target files and directories at the dired buffer;
2. Execute 'dired-do-flagged-delete' (type 'x');

Result: I'm asked about confirmation for every non-empty directory being removed.

Question: is there easy way to say 'yes' one time and get all of the marked stuff (including non-empty directories) removed?

I googled that it's possible to set 'dired-recursive-deletes' to 'always' but that doesn't protect me from accidental 'delete' processing (e.g. mistyped 'x' while wrong directory is marked).

I understand that it's possible to customize emacs via lisp injections but I don't know that language so far, that's the reason why I'm asking whether there is other solution.