> I think we should be more positive about such research (it helps us to further our understanding of COVID-19) Listing important limitations of a study is not

> I think we should be more positive about such research (it helps us to further our understanding of COVID-19) Listing important limitations of a study is not being negative. It is contributing to understanding the paper. The comment you are replying to is the most substantive comment in the thread. One does not need to encourage authors with compliments, nor does one need to balance criticism with praise.