Researchers Say They've Uncovered a Massive Facebook Bot Farm From the 2020 Election – Mother Jones

https://www.motherjones.com/politics/2021/05/facebook-bot-farm/

It's surprisingly easy to do and an entity with money/intent clearly feels it's worthwhile. Tip of the iceberg.

I used to use Selenium a fair bit for integration testing and such. Pretty much anything a logged in user can do, Selenium can do.