And yet this info, copy/pasted by an official source by the OP, directly contradicts you:
“Other people can assist you with your visa
application. Note that under U.S. law (22 C.F.R. 41.103) you must electronically sign and submit your own application unless you qualify for an exemption. Even if someone else helped you complete the application, you (the applicant) must click the "Sign Application" button, or your
application may not be accepted.”
YOU are the one perpetuating incorrect info in this thread.