The Rule of Cool states that people are willing to make allowances for something that's cool. And powered pop-ups like the one on the Oppo Find X and vivo NEX S are certainly quite cool. The final verdict from last week's poll shows that slightly less cool but more practical solution - manual sliders - prevailed. With nearly half the vote, the style of phones represented by the Xiaomi Mi Mix 3 and the Honor Magic 2 are the clear favorite. Reliability seems to be the major concern here and the mechanized sliders have an extra point of failure - what happens when the motor stops...
Source: https://www.gsmarena.com/weekly_poll_results_manual_sliders_are_the_way_forward-news-34367.php