What value does this provide at all?
This reminds me of Chinese online games will block teenagers at night. (防沉迷) Except that the government forced all online games to do so. Because if some does some does not, teenagers just play the one that does not block them.
Maybe we should build a system that have user's actual password to FB IG TWTR TIKTOK, and user only has password to that system and when they post go through that system as a proxy. Then the system can truly restrict the frequency of post.
But this violates the term of service of all the social network listed above