The new poll shows the highest level of support in a decade for the government ensuring all Americans have healthcare.
Summary
A Gallup poll shows 62% of Americans believe the government should ensure universal healthcare coverage—the highest support in over a decade.
While Democratic backing remains strong at 90%, support among Republicans and Independents has also grown since 2020.
Public frustration with the for-profit healthcare system has intensified following the arrest of a suspect in the murder of UnitedHealthcare CEO Brian Thompson, reportedly motivated by anger at the industry.
Recent controversies, including Anthem’s rollback of anesthesia coverage cuts, and debates over Medicare privatization highlight ongoing dissatisfaction with the system.
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%.