'You are expected to hew to certain viewpoints. It is not enough for you to just be quiet, you have to actively and enthusiastically say and write words supporting the "right" opinion.'
Show me an example of someone being ousted for remaining quiet.
'Only the expression of a "wrong" opinion is enough for punishment -- no concrete act is required, only the apparent possibility of it.'
A group of people prevented couples that wanted to be married from being married. That is clearly an act. Donation of $1000 toward those ends is not simply holding an opinion.
"The historical fact of your actual behavior is irrelevant to the above."
Again, there was "actual behavior", as a matter of "historical fact".
On the following point the world does look something like you describe (probably too much so):
'If you have ever expressed the "wrong" opinion in the past, then this is enough to bring punitive action against you, regardless of the current circumstances.'
But similarity on one point out of 4 is hardly a strong case.