Anyone care to fill me in why creating a web server, opening access publicly through the creation of an authorized user account and publishing information on sa

Anyone care to fill me in why creating a web server, opening access publicly through the creation of an authorized user account and publishing information on said access does not constitute explicit permission to access? There's a lot of flipflopping legal discussion happening in this thread but to me there were explicit actions taken by the web host in order to allow anonymous individuals access to the information published.