 "All Good Things ..." was met with generally mixed reviews from critics, many of whom were ambivalent towards the final scene. Despite criticizing the episode's recurring theme of moving on, Emma Rosenblum from Vulture appreciated the ending as an "interesting twist". Andy Dehnart of Reality Blurred felt that, from a production standpoint, the final scene was "really well-done" and appeared realistic despite being filmed in a backlot. In contrast, Chadwick Matlin was displeased to see producers "capitalizing" on the controversy surrounding longtime scripting allegations, which he felt exploited its naive teenage fanbase. A writer for Daily News described the episode as "bittersweet" and "emotional", but felt that the program "overstayed its welcome". Megan Friedman from Time called the ending "surprisingly smart", but felt it did not leave an impact on viewers who were already skeptical of the series' truthfulness.
