That just means they are personal, can't be given, sold, or transferred to somebody else.
It does not mean that government can't or won't curtail or limit.
-- You can't protect yourself by silencing yourself. --
Sure you can. It happens all the time. You can't speak your mind in court, for example. Congress is not a free speech zone, they have all sorts of decorum rules. Patrick Heny would be expelled for saying "give me liberty or give me death."
-- ... and are not subject to the whims of government. --
Our government is liars of the highest order. It is whimsical, dangerous, and anti-liberty. It denies all of that of course. "Orwellian" in fact.
What you say is true in a broad sense, but I am talking about this particular action.
This is silencing free speech out of fear.