You only start to need the popups if you specifically put cookies on a visitor's browser to build a personal profile of them.
This can be for e.g. sales acquisition or marketing engagement, but also includes cookies to simplify login, so not everything is "stupid stuff." A cookie that stores "was here, skip the splash page" may already fall afowl, if you put any session metadata in it.
This can be for e.g. sales acquisition or marketing engagement, but also includes cookies to simplify login, so not everything is "stupid stuff." A cookie that stores "was here, skip the splash page" may already fall afowl, if you put any session metadata in it.