The FBI contacted trust and safety and said 'Hey we have concerns about these tweets'. Twitter decided to take them down in some cases.
Who is corrupted here? Twitter for taking reports and then deciding how to react to them? The FBI for finding misinformation that might lead to crazies creating mass casualty events?
The FBI at no time FORCED twitter to do anything. So it's not violating the first amendment.
"Create a strong and unique passphrase for each online account you hold and change them regularly. Using the same passphrase across several accounts makes you more vulnerable if one account is breached."
This is an ask from the FBI. But they obviously aren't coercing you not to use abc123 as your password.