Or, the democrats could use their reconciliation to pass it. See, this can go both ways.
You'll say "those repubs are to blame because they blocked the bill to raise the debt ceiling", all the while you have an ability at your disposal to make sure it gets raised.
Both sides are wrong here, playing politics over the debt ceiling, but at the end of the day, both sides are guilty.
I understand, you want the senate to cave, so you can get the debt ceiling AND be able to use reconciliation to pass the next massive spending bill. McConnell is saying they don't like what's in that big spending bill so they are going to hinder that by forcing dems to use their reconciliation to pass the debt ceiling.
Again, this is what politics has boiled down to. Using tactics to get wins for your side, and both sides are doing it.