I would speculate that only Detroit, Flint and Ann Arbor are keeping those two in the Senate...
People who think the 17th was a good thing have no understanding of the constitution and why it originally left the election of senators up to the state legislatures.
Senators were to be an extension of the representative state government and once the whole state starts voting for them you lose the representation of the combined groups who voted for state legislators.
Representatives are elected by a popular vote but only of limited numbers of people within their districts. (which is why I still consider the US house to be the “upper house”.)