That’s a slightly different question (opinion on the ACA vs whether the government should ensure that everyone has healthcare).
Although the latter is also true, according to the OP article:
The poll found that a majority of Republicans still believe ensuring health coverage is not the government’s job, but the majority has shrunk since 2020.
That year, only 22% of Republican voters believed the government should ensure everyone in the country has healthcare, but that number has now grown to 32%.
Full text of the actual study.