The meta-science tag is used for posts discussing how science is being done and what can be done to improve on it. In particular, it contains topics such as
Inefficiencies and misaligned incentives in the academic ecosystem.
Estimations of the value of scientific advances and subsequent prioritization.
Efforts to improve academia or science.
For posts related to improving how one conducts better scientific research, the tag research methods is more appropriate.
For posts about the general concept of progress in science, use the tag scientific progress.