Something I've been seeing more and more lately is the "ZOMG Facebook won't allow [X]". This is the latest permutation on the "ZOMG eBay won't sell [X]" or "ZOMG PayPal won't accept orders for [X]." Now, while eBay and PayPal are services that your actual money goes to, Facebook does not cost anything nor do they owe you anything.
If they change the settings without telling you? That's their perogative. Annoying-as-hell ads on your mobile device? Same same. Blocking sites or posts of a certain nature? Ditto. If you don't like it, you're 100% free to start your own social network that allows [X] and doesn't block certain content. You're using their free service for free - you're getting what you pay for. If you don't like it, the digital door is right there.
They're not squelching free speech if they decide that pro-[hot button issue X] posts are over the line and delete them. They are a private entity - they are not beholden to the concept of free speech. It's especially ironic when you consider that it's a free service... While the First Amendment means the .gov won't kick down your door for something you post online (unless you're in Massachusetts, that is), it has dick-all to do with what Facebook will allow you to post on their website.
TANSTAAFL. There ain't no such thing as a free lunch. Robert Heinlein's pithy maxim from "The Moon is a Harsh Mistress" has never been more applicable than when dealing with the book of face. Being able to connect with friends and interact with folks from all over the world - for free - means that you accept their terms. If those terms mean dealing with popup ads or not being able to see certain content, well, you either accept it or you don't.
But don't complain that the free service is selling your data or prohibiting certain content. When you are free to leave, free to start a competing service, and don't have to invest one red cent, you either take it or leave it. It's a lot like complaining that the free car you got from the dealership down the road doesn't have a CD player and is in the wrong color. Of course, in this case it'd be a free Hyundai, but still...
Then again, like the expression goes, some folks would complain if you hung 'em with a new rope...
That is all.