>> As far as I can tell, the blog is perfectly legal under the First Amendment.
The blog is legal, but things can be legal and still have consequences.
Let's say you work at the office, and forget to lock up one night. Someone walks in and takes a laptop. -you- haven't committed a crime, but you'll likely lose your job.
Free Speech prevents the govt from locking you up based on what you say. (Unless what you say is a crime, like say inciting a riot.)
It does not provide you with the right to say whatever you like on a private (non govt) platform, nor does it absolve you from legal liability (consequences) of what you say.
The obvious example is "conspiracy to commit xxx" - sure all you did was -talk-, but Free Speech doesn't give you a pass for that.