A recurring claim in the literature is that “active” social media use (ASMU) leads to increases in well-being, whereas “passive” social media use (PSMU) leads to decreases in well-being. The aim of this scoping review was to investigate the validity of this claim by comparing the results of studies that appeared after the meta-analysis of Liu et al. (2019). We found 27 studies focusing on 85 different associations of ASMU or PSMU with well-being. Results showed that studies used a hodgepodge of operationalizations of ASMU and PSMU. Some mixed up private (e.g., direct messaging) and public (e.g., posting, browsing) ASMU and/or PSMU, which is problematic, because private SMU is more synchronous and intimate than public SMU, which may lead to different effects. The majority of the cross-sectional, virtually all the longitudinal, and most of the experience sampling studies disconfirmed the hypothesized associations of ASMU and PSMU with well-being. Moreover, the experiments revealed that the effects of PSMU depend on the content and sender of the posts. Our results indicate that it is time to abandon the active-passive dichotomy and replace it with a more valid measurement of SMU that takes characteristics of SM content, senders, and receivers into account.