Somehow now this is bad... Ridiculous.
hardly.
This can't happen to utility monopolies:
https://www.theguardian.com/media/2021/oct/06/telegram-says-...
If your claim were true, everyone would just be stuck suffering and beholden to Facebook's ability to fix their service for lack of options.
Let me ask you this: do you think Apple should be allowed to ban whoever they want from their platform justified by them being a private company? If you say no, then you should also say no to Facebook being allowed to do so. Otherwise you're just twisting the facts to support your political position.
Not to mention we're talking about them sending a pretty formal legal threat. Would you philosophy in this case not be "if you don't like their browser extension, don't use it?"
If you're building a new social network today, it makes sense to tap into an existing social graph so you can bootstrap your network with an existing ecosystem. Michelle Lim made a great case for this in her post here:
https://www.michellelim.org/writing/into-the-fediverse/
These protocols exist today. This is a W3C recommendation as of 2018-01-23:
Speak for yourself. Not everything needs to be 'planet scale', I run a few social networks and they do just fine.
And I agree with Facebook in this case, if you have someone come into your house with the sole intent of burning it down, of course you're going to kick them out. It's no different than dealing with trolls or other bad actors.