So you buy a new TV, unpack and install it, and then when the whole family is gathered around, you suddenly get this confirmation on the TV if you agree with th

So you buy a new TV, unpack and install it, and then when the whole family is gathered around, you suddenly get this confirmation on the TV if you agree with their T&C. Are you supposed to reject them and return the TV at this point? T&C should be part of the purchase agreement, instead of being forced upon the user while using the product after purchase. Any one-sided change of T&C after purchase should be invalid and punishable.