Ecclesiastes 4:1 (Oppression in Qoheleth)-Is the Book Pessimistic?

"Then I looked again at all the acts of oppression which were being done under the sun. And behold I saw the tears of the oppressed and that they had no one to comfort them; and on the side of their oppressors was power, but they had no one to comfort them. So I congratulated the dead who are already dead more than the living who are still living. But better off than both of them is the one who has never existed, who has never seen the evil activity that is done under the sun" (Ecclesiastes 4:1-3 NASB).

For the record, I don't believe that Ecclesiastes is pessimistic, but here are some sources to consider:

https://academic.oup.com/jss/article-abstract/3/4/336/1655791?redirectedFrom=PDF

https://www.galaxie.com/article/bsac175-700-01

https://journals.co.za/doi/pdf/10.10520/AJA10109919_827

https://www.thegospelcoalition.org/themelios/article/ecclesiastes-in-context-reclaiming-qoheleths-canonical-authority/

https://scholar.csl.edu/ctm/vol22/iss1/2/