All you need is to send your password, and a quick session to set up 2FA with the buyer's methods, update recovery settings, etc. As long as you don't use that

All you need is to send your password, and a quick session to set up 2FA with the buyer's methods, update recovery settings, etc. As long as you don't use that account for anything else, it's seamless. Legalese isn't going to stop that.