Its what I like to call the "Maggots in the Machine" phenomena
Simply put, bigass companies and providers of universally used services like to go shopping for cheap new employees at colleges and universities to do twice the work of older drones for half the wage. So long as this new meat does what they are told and handles all the busywork, they are in practice left more or less alone by the hiring company and the choices they make are not scrutinised unless they put the company at risk of lawsuit or whatever, meaning they are free to work under their own discretion so long as they toe whatever line they are given.
Problem is, this discretion they are allowed means that so long as they frame what they are doing in a "THIS IS SUPER GOOD PR BOSS MAN!" or "oh it would be such a shaaaaaaaaame if you were to try and fire me and force me to cause drama for the company..." light they have the capacity to seriously fuck with anybody they take a disliking to for any petty reason, and so long as they keep it all in the limits of their contract and do not target anyone who will prompt massive media outrage, their bosses will probably not bother to intervene unless they start getting fairly blowback.
Now for things like fucking stationary factories or toilet paper contractors, there isnt really any way this power can be abused to fuck with people both due to the number of alternatives said person they are fucking with can go to instead, and because of the extremely limited damage this can do to the average person who earns the ire of one of these proverbial maggots in the machine. Once we get to things like social media monopolies, credit card companies, and internet providers however, these maggots can do quite a bit of damage to those who earn their ire.
Now remember where I said these companies recruit...colleges and universities. I.e. the places where the REEEEEEEEEEEEEEE train is still in full steam. Add in to this the near ubiquitous attempts by corporations to be more "woke" in order to attract niggershekels, and you have the perfect setup for anything deemed "problematic" to be quietly censored by some manlet in the complaints department who wants to earn his office's diversity consultant's asspats and to go to bed on his used ebay futon that night and fap about how he is fighting nazis in cyberspace
Now in this case here, were I a betting brony I would say a certain someone has been spamming his own ISP with complaints about how kiwifarms is ILLEGAL CP CONTAINING HARASSMENT NAZI HATE SPEECH! and eventually this bore fruit when some dangerhair maggot in middle management read over the complaint and decided to use what little power she had to add the farms to the "block from internet" list