The message of President Trump's conflicts of interests has already been tested and America shrugged. When there's only so much air in the room it's important to pick messaging that wins.
To further refute your point: the public didn't shrug, they voted against his election by millions of votes. Furthermore, the duration that his approval rating has been above 50% during the entirety of his presidency is unprecedented in its briefness.
Since then, we've heard a steady drumbeat of news about President Trump's nepotism and self-dealing. How would you rank the impact of such news vs. the Mueller report, or the treatment of immigrants at the border? There won't be a Emolument Report either.
Yes, just one more Trump is Selfish and Plays Golf article, or Where are Trump's Tax Returns, or Why are Trump's Kids in Office, or Why is the Navy Boozing it Up at Trump Estates, or Why is there link between Trump and Saudi money. Yes, there's blood in the water.
Maybe a second push for impeachment on these very issues.
People who care about corruption being rooted out aren't really the types of people who are gearing up to riot in the streets.
I should also point out the small matter of the 2018 election, where the republican majority in the House of Representatives was neatly demolished.
It's worth remembering that President Trump was not elected with a majority of the voting populace, let alone the entire US populace.