Exactly the point  ..  if it gets to that "self custody" doesn't help ..  only participation of big institutions and broad acceptance  does ..  For example if US  banned bitcoin , it will anyway be worthless no matter where you hold it - in custodial or self custody .. 

Plus scaring tactics are always a bad marketing ... if self custody is good ,  tell people the pros . Sell on merits   .. not  throgh fear mongering .. 

By the way - tell me a single reason a retired 60 years old should go for self custdody  ?  I mean I can't even remember my zip code :- )  and most people misplace their iPhone  thrice  a week  .. and you guys want them to have self custody of their life savings in a cold wallet  :-)  ..