Once that deep fake technology algorithm gets in the hands of the masses (Adobe Premiere After Effects plugin, Instagram/Snapchat filter, Apple Facetime filter, etc) ... so many obvious directions it will take:

- dating / flirting apps

- job candidates being interviewed remotely via webcams will use software to make them look younger

- "facelift" every television personality (news anchors, etc) and every movie actor. Both for creative purposes (younger/older timeline aging), for vanity, and for extending careers.

- generate fake but convincing political ads to put words in the mouth of opponent that he/she never said

- a growing distrust and skepticism of all videos including archive footage because we never had SHA256 authenticated hash of the old videos widely disseminated before deepfakes became ultrarealistic. E.g. There will be a subset of tomorrows kids that will not be convinced JFK ever actually said, "landing a man on the moon". The WTC towers were never hit by airplanes. All that old footage will be dismissed as fake. Video evidence becomes useless. Yes, society will try to counteract it with software the detects deep fakes but some of the public still won't be convinced. (Same as evidence against anti-vaccine being rejected.)