Are Missouri Republicans More Willing To Stand Up To Sinquefield Than St. Louis Democrats?

Fired Up Missouri posted audio earlier in the week of Republican Senate appropriations chair Kurt Schaefer saying that Rex Sinquefield's disastrous Everything Tax "scares the bejesus" out of him while Sinquefield was sitting in front of him:

“It scares the bejesus out of me what's going to happen if we phase into this and we have a substantial dip in general revenue,” said Senator Schaefer, who also said he was “intrigued” by the concept of a higher sales tax, in general. But “I'm very concerned about what happens when it phases in, especially during the phase in, and whether or not we have a substantial dip in general revenue because we cannot take it right now.”

Which makes me wonder: why are statewide Republicans so much more willing to publicly criticize crazy right-wing ideas from Sinquefield than many (but not all) St. Louis Democrats? They're all getting "donations" from Rex, but shouldn't Rex's St. Louis Democrats be able to, you know, actually stand up for Democratic values on financial issues every now and then?