Does ESG investing incorporate ethics and is there a possibility that this channel may catalyze needed change?

Would it be possible to get guidance on this, such as ideas, references etc.

I am conducting a qualitative analysis for my research so mainly looking into secondary data. I was also thinking for the methodology section a case study analyzing 2 different ESG reporting agencies (Sustainalytics and Refinitiv) then looking into 1 specific company (Walmart) and see how it is evaluated. Walmart claims to be doing good which seems to be giving them more ESG "points" however there seems to be a lot of greenwashing... In 2021 Walmart inaugurated a $2 billion green bond issuance but is involved with a lot of greenwashing. This can falsely influence investors.

This must also be tied to economics.