Vetting by using social medias seems completely bonkers.
For instance I don't have any current instagram, facebook, or tiktok account and my old accounts including the google ones I have used sporadically have always been using generated names[1] but there are a fair number of other people having my real name , how would the US government know I am not hiding by keeping one of those profiles private?
Bottom line: I will never apply for a US Visa and by losing all atractivity to foreign talents and only accept keeping its interbreed assholes this country is completely doomed.
[1] it is quite funny to have whole families from Iceland or Tanzania trying to connect to you because your has their last name.