A government doesn't "express opinions" they "enact policy."

No? What!? Name a scenario in which the government would put forth an opinion on something.. governments, like corporations, can't have opinions.

Sure. "We think that info may put someone on our security team at risk, can you please take it down?"

That is not an opinion. It is a request at the best or a command when read pragmatically.

It's obviously not something they can say in press releases, but it also may not be factual (or provable). There are "we think" situations which are important.

Yeah, and no one is preventing that.

There is a diff between opinion and force/blackmail disguised as opinion.

"You have a fine shop here, would be a shame if it burned down".

Syntactically, it is an opinion. But it is not just an opinion if comes from a mobster.

The daily White House press briefing is an excellent venue.

I don't think that gives them all the avenues to express things that may be important.