Marketing thinks "OMG, people subscribing the newsletter are returning to the website way more often than regular ones". Then by showing this newsletter pop-up

Marketing thinks "OMG, people subscribing the newsletter are returning to the website way more often than regular ones". Then by showing this newsletter pop-up down everyone throat, they successfully get X% more subscribers. Much engagement, much success, poor UX, annoying for everyone. Maybe people subscribing to that newsletter are the most interested and you shouldn't bother everyone with it for the sake of few subscriptions.