It’s an article literally saying that “leftists can push Biden to the left” while pointing to these accomplishments as proof:

[Biden’s administration] embraced massive government intervention to stave off the worst economic impacts, including handing millions of families monthly checks (by expanding the child tax credit), giving all kids in public schools free meals, boosting unemployment insurance and extending health coverage to millions.

All of those policies were temporary and have now expired. Truly the most progressive president since LBJ.