Not necessarily, however, it is also the case that it hasn't yielded actionable insights for industry applications.
I don't have any studies at hand here, but it seems obvious to me that even simple behavioral observations can factor into optimizing the user experience of a variety of platforms. And I also wouldn't underestimate these platform engineers so much as to assume they don't take into account such findings.
If I was in a position of executive authority in designing and optimizing a social media platform, I would readily turn to behavior psychology, insofar as the science can be experimentally framed so as to yield actionable findings.
From graphic layout to color contrast and other such aesthetic features, I'd imagine it would be relatively straightforward to gauge the quality of a user's experience, in terms of accessibility and pleasantness, and I would also imagine such a metric would correlate non-trivially with things like user retention, user engagement, session length, etc, depending on the platform. A sort of experiencial feng shui.