Regardless of personal politics, this situation was both predictable and expected.
Any one with a lick of sense knew going into this shut down that tens of thousands of middle-class families would be caught up in the wage delays that a shutdown would bring.
That a shutdown would also impact other businesses manned by Trump supporters was an unintended consequence of the action. Unless it wasnt unintended.
Additionally, the only real question should have been how long would this go on before the pressure brought to bear by constituents began to make supporters worry about re-election. Again, a predictable outcome.
Judging from my readings, lots of people thought it would be the other guy that was to get blown up. An unfortunate, unexpected surprise.