Rav Moshe is very strict about this.
Stack Exchange has a points system, equivalent to "likes" on other platforms. This system has been demonstrated to be highly addictive as we get a dopamine rush every time we get a like1
So, would Rav Moshe be opposed to us participating in Mi Yodeya? Is there any mitigation because it is a cause of increased Torah learning?
1 eg Lindström, B., Bellander, M., Chang, A., Tobler, P.N., & Amodio, D.M. (2019). A computational reinforcement learning account of social media engagement. PsyArXiv, for one such study out of many