It should be, but it seems that it never was. With the introduction of GDPR, they now make you always give your consent to the use of your data (at one job interview they made me register on their site and give this online consent before they continued with further interviews).
Very few sites now have a "reject all" button. At the moment it seems strange to me that in order to be able to read something on the net, you have to reveal and provide your personal data. But before this regulation was introduced, this data was collected anyway. And indeed, if one does not play along with it, one cannot participate in anything. And of course, one should not think too much about this topic in order to continue living mentally healthy. 😃