As another person said it's just "semantics" so it's going to be legal. They can't pretend that you checked the "I agree to the terms of service ..." checkbox

As another person said it's just "semantics" so it's going to be legal. They can't pretend that you checked the "I agree to the terms of service ..." checkbox just yet. So technically they can't "make you a member" against your will they are just bringing you very close to becoming one.