Usenet was a thing in 1990, and people absolutely did post their opinions there. It was nothing like going on national TV, even though it was quite possible for a Usenet post to go "viral" (resulting in months-long threads with many hundred replies, sometimes cross-posted elsewhere on the internet).

> Would you feel comfortable that you still have your job and your reputation after going in front of the nation and saying "I think interracial marriages should be illegal"?

Funny choice there, since that used to be conventional wisdom well into the 1960s and later, at least in some places. You'd get in trouble for saying the opposite!