They know what they're doing by using your love of free speech against you to spread lies.
Social media is a backdoor into our societies which is why authoritarian countries ban it.
Youtube is banned in Russia, all western social media is banned in China, because they know how it can be weaponized against them...because they weaponize it.
Sort of. They are perfectly happy for you to use the social media which is subject to the local nation's laws/regulations, and which they have potentially-unlimited degree of influence over.
the "blue checkmark" would be reserved for any account that has gone through identity proofing (e.g. IAL2). anonymous accounts would still be allowed of course but at least you would have a clear way to differentiate bots and propaganda vs. actual real people with known identities. not to say that identity-proofed accounts would not still be posting sh*t but it would be a better system overall