I don't recall them asking for any social media at any point. But I don't have Facebook, tiktok, instagram, snapchat, grinder, myspace, or other muggle social media.

I of course wouldn't know if they tried to find my profiles.

BTW not having profiles on mugg^W normie social media may be sometimes considered a red flag by itself, so I keep e.g. a reasonable Facebook profile, without posting anything.

YMMV but at least for US entry just listing GitHub (it's one of the options in the ESTA application) hasn't caused any "random" inspections for me so I'm not sure how much of a flag it really is on its own.