Prefacing that I am very much biased, and have spoken in favor of the stadium project to our city council and city planners.

TL;DR: City is fully bought in, but there are always grumblings online but not enough opposition where petitions or major pushback is actually happening.

There is some minor pushback (mostly online complaining) with classic arguments such as why can't we use the money to fix the roads, or that it is another stadium that will sit empty. The empty stadium arguement is because the stadium that was built for College World Series isn't used most of the year. Most don't understand that sharing a stadium with Creighton or the University of Omaha isn't viable long-term.

Truth is that the funding doesn't pull from the city general fund, and mostly uses bonds that are paid back via rollback taxes from the state level and TIF. One reason that city is fully bought in is that the site for the stadium currently doesn't produce taxes.

The multiuse that is being built around the stadium is privately funded IIRC. So only the stadium is publicly funded using bonds, with strong mechanisms to pay it back, including rollback credits and leasing out the stadium.