Yup. Putin clearly had a vested interest in not having Clinton as the president, since she would have likely taken a strong stance against Russia’s bullying of their neighbors and shit-stirring both in Europe and the US. But he has no particular love of Trump or the GOP; all he and the rest of Russia’s ruling clique want is a weakened, inwards-turning USA and a fractious West that can’t or won’t intervene as they try to extend and expand Russia’s international power and tighten their control of the country.
Like others have said, McConnell gets away with his outrageous behavior, because the rest of the GOP senators let him do so. If enough of them wanted to do it, they could absolutely rein him in, or remove him from his position as the majority leader.