You keep calling it a conspiracy theory without providing any evidence that it is. It's a known fact that Obama was praised for targeted political advertising:
https://www.theguardian.com/world/2012/feb/17/obama-digital-...
It's also a fact that these very left leaning platforms are now removing the ability to do exactly what Obama was praised for.
You've not disputed either of those, just called the people pointing them out childish conspiracy theorists.