That's reasonable enough, but you have to consider it in the context that we don't vote for president, we vote for state electors to vote for president.

If you live in a 'safe' state, tacitly agreeing with your state's electors doesn't mean tacitly agreeing with the electoral college result.

If you can’t be bothered to make your disapproval seen at least once every 4 years, then I consider it a tacit approval. So that actually makes 2/3 of Americans in support of Trump’s brand of America.