they do survive sweeps better but only if they have actual spend history. if you buy an aged account that has just been sitting there idle for two years with zero spend, it will get flagged during a sweep just as fast as a fresh profile. facebook looks at the trust score which is mostly billing history and consistent activity. if you have an account that has been spending daily for months without issues, that one is way more resilient during normal sweeps compared to a brand new one. but yeah, age alone without activity is kinda useless for surviving bans.