The rhetorical progression is:
araʾayta → fa-dhālika → wa-lā yaḥuḍḍu → fa-waylun → alladhīna...
The question draws attention; identification follows through conduct; a second fault is added; then a warning is pronounced and qualified. This is a staged disclosure, not a set of detached moral statements.
Disconnecting verse 4 from verses 5–7 risks erasing the restriction that identifies the target of the warning. A powerful opening and accurate scope must be read together.